This original four-bar rock-style study uses a C, A minor, F, G harmonic outline. It is deliberately simpler than a band arrangement. The right hand stays over C4 through G4. The left plays one bass root at the start of each bar, then holds it. There is no sustain pedal or automatic accompaniment.
The bass roots are C3, A2, F2, G2, one octave below the roots of the right-hand chords in the last lesson. Use left-hand finger 5 on each root for this moving-hand exercise. Move the whole relaxed hand to the next note; do not stretch from C3 to F2. Locate the coming key before the next bar, releasing a little early if necessary. A small gap is preferable to a forced reach.
What each hand plays in each bar
Bar
Right hand: beats 1, 2, 3–4
Left hand: beats 1–4
1
C4, E4, G4
C3
2
C4, E4, G4
A2
3
C4, F4, G4
F2
4
D4, F4, G4
G2
Both hands begin each row together. The bass lasts four beats; the melody attacks on 1, 2, and 3, holding its last note through 4.
Read the two staves as a shared sequence
The table and combined score describe the same four bars in different ways. The table summarizes the note names and the counts. The score shows the pitches in their clefs and the duration symbols. Start by finding bar 1 in both. Its upper part has C4, E4, G4, while its lower part has C3. C3 and C4 are different keys an octave apart. Their matching letter names do not mean that the two hands should meet on one key.
Read downward as well as across the grand staff. At the first horizontal position in each bar, an upper note and a lower whole note align. Both hands begin there. At the next upper note, the lower staff does not need another notehead to tell you to keep holding. The lower whole note already specifies the full four-beat duration. Empty space later in that bar is not a rest. A rest would require its own symbol and would tell that part to be silent.
The upper rhythm is quarter, quarter, half in every bar. The filled heads with stems occupy one beat each. The open head with a stem occupies two beats. Count attacks on 1, 2, and 3, then continue counting 4 without another attack. The lower open head without a stem lasts all four beats. Read the two parts against the same count rather than finish reading the upper bar and then allot more time to the lower one. Their durations overlap.
Use Next note in the combined player to inspect these relationships without sound. At the second upper note, the bass highlight remains on the same whole note. At the third upper note, it remains there again. The manual steps identify attacks rather than equal lengths of time. The step after the half note moves to the next bar even though that half note lasts longer than either preceding quarter. Learn the durations from the symbols and count; clicking through the score cannot by itself demonstrate a steady beat.
Check the start of the second system as well. Its upper C4 belongs to bar 3, not a restart of bar 1. The lower F2 confirms that location. The score prints two bars per system, so reaching the right edge means continuing on the next pair of staves. Preserve the count across that line change just as you preserve it across an ordinary bar line. If you lose your place there, locate the bar number before resuming rather than identify the bar from its opening upper C alone.
The third bar's G is not in an F major triad; it adds tension over F. The fourth bar uses D, F, G over G, including F, the seventh of a G7 chord. This study shows why a melody need not contain only a chord's three notes. To finish on a more settled sound, add a fifth bar with C3 in the left hand and C4 in the right, held for four beats. The playback below contains the four-bar study only.
Stopped. Select a note with Next note, or play with sound.
Right hand · treble clef. Finger numbers: 1 thumb, 2 index, 3 middle, 4 ring, 5 little.
Tempo: 60 quarter-note beats per minute. The count-in lasts 4 beats. Durations in the selected-note readout use quarter-note units. Tempo changes and Reset stop playback and select the first note. Audio starts only on request, plays once, and stops when hidden or off-screen. The tones are synthesized pitch guides, not a piano recording. A short release gap separates notes. Next note advances to the next attack in either hand. Held notes stay highlighted. There is no moving cursor. Start at low device volume.
Left-hand route
Left hand · bass clef. Finger numbers: 1 thumb, 2 index, 3 middle, 4 ring, 5 little.
Find the roots separately before timing the jumps. They are C3, A2, F2, G2 in that order, not ascending order.
Both hands together
Right hand now: C4 · 1 beat · Right-hand finger 1
Stopped. Select a note with Next note, or play with sound.
Left hand now: C3 · finger 5
Right hand above · left hand below. Finger numbers: 1 thumb, 2 index, 3 middle, 4 ring, 5 little.
Tempo: 60 quarter-note beats per minute. The count-in lasts 4 beats. Durations in the selected-note readout use quarter-note units. Tempo changes and Reset stop playback and select the first note. Audio starts only on request, plays once, and stops when hidden or off-screen. The tones are synthesized pitch guides, not a piano recording. A short release gap separates notes. Next note advances to the next attack in either hand. Held notes stay highlighted. There is no moving cursor. Start at low device volume.
The combined score has the right hand on the treble staff and the left hand on the bass staff. Notes at the same horizontal position begin together. The left-hand whole note stays highlighted while the right hand moves through the bar. Finger numbers for the left hand appear below its staff. The audio holds each bass root while the right hand changes notes. Lower your instrument volume enough to hear the reference if playing along, but do not turn up headphones to overcome a loud keyboard.
Separate pressing from continuing to hold
The new coordination task is not making both hands perform the same motion. It is letting one hand continue a sound while the other starts new sounds. In the first bar, left-hand finger 5 begins C3 alongside right-hand thumb 1 on C4. On beat 2, right-hand finger 3 begins E4 while the left keeps C3. On beat 3, right-hand finger 5 begins G4. The left still has no new attack. On beat 4, neither hand begins a new note.
Try this bar without pitch changes first, using C4 for every upper attack and C3 for the lower hold. Preserve the written durations of one, one, and two beats above a four-beat bass. This deliberately temporary version removes note finding while retaining the need to repeat one hand without repeating the other. It is not the written melody. Afterward restore E4 and G4 and compare the coordination. If the bass begins to repeat only when pitches return, the additional note-finding task is interfering with the holding task.
A different error is releasing the bass on beat 2 as the upper hand moves to E. That shortens the lower whole note even though its beginning was correct. Watch or listen for the lower sound across the entire bar. The reference holds the bass while the melody changes, but the page does not listen to your instrument. A selected bass note is an instruction in the example, not evidence that your own bass key stayed down. You must compare your actions with that instruction.
Holding a key means maintaining its depressed state, not adding a new push on every count. On a keyboard whose sound naturally fades, a quieter sustained bass is not automatically a release error. Check whether the key rose before its intended ending. Conversely, a sustain effect could conceal an early release by continuing the sound after the finger leaves. Keep the no-pedal, no-automatic-accompaniment setup for this study so that your actions and their timing remain easier to distinguish. The goal here is the written coordination, not a continuous wash of sound.
Use the repeated melody to hear a changing bass
Bars 1 and 2 have exactly the same upper notes and rhythm. This makes their different bass notes useful for comparison. The right hand repeats C4, E4, G4 with fingers 1, 3, 5. The left changes from C3 to A2. You do not need a new right-hand position or a new rhythm to hear a different relationship between the parts. Follow those two bars in the combined score and identify the single written change before choosing whether to hear it.
Over C3, the upper C, E, and G are the notes of C major encountered one after another. Over A2, C and E belong to A minor, whose full triad would be A, C, E. The upper G is an additional note beyond that triad. The study's description of a C, A-minor, F, G outline is therefore a summary of its harmonic direction, not a claim that every melody note belongs to a three-note chord. The bass helps suggest the harmony while the melody can add other pitches.
Bar 3 changes the upper middle pitch from E4 to F4. Read the finger number 4 rather than carry over finger 3 by habit. Its C4, F4, G4 sits above F2. F major would contain F, A, C, so C and F fit that triad while G adds another pitch. In bar 4, the melody begins on D4 with finger 2, then uses F4 and G4. Above G2, D belongs to G major and F is the seventh included in the G7 description already introduced here.
For a practical comparison, play the first two upper bars alone and notice that nothing changes between them. Then add only their written bass roots. If you use the player, compare its right-hand-only and combined versions rather than expect the synthesized sound to assess your balance. The same upper phrase can take on a different harmonic context because the lower reference changes. This also explains why a correct melody above a wrong bass root is still a wrong combined result, even when every upper fingering and rhythm matches.
A ten-minute practice session
For two minutes, find the bass route without a clock. Check each pitch against the black-key groups.
For two minutes, play the right hand alone at 60 BPM, with fingers 1–3–5, 1–3–5, 1–4–5, then 2–4–5.
For three minutes, combine one bar at a time. Both hands press on 1. The left keeps holding while the right presses on 2 and 3.
For two minutes, connect the last two beats of one bar to the first two beats of the next. Listen for a pause or rushed entry at the boundary.
For the final minute, play once through and note one specific problem to repair next time. Add the optional final C bar only after the four-bar cycle is steady.
Dynamics are changes in loudness. After the pitches and rhythm are reliable, keep the bass softer than the melody. On a touch-sensitive keyboard, key-strike speed matters; pushing harder after the key is down does not make that sustained note louder. If your instrument has fixed touch response, focus on timing and clean releases rather than trying to force a volume difference.
Plan the route at the bar lines
The left-hand keyboard picture marks the whole route at once. It does not ask you to hold all four roots simultaneously. Read C3, A2, F2, G2 in the written order, then compare their locations. C3 to A2 moves left, A2 to F2 moves left again, and F2 to G2 moves right to the next white key. Finger 5 plays each destination because this exercise moves the hand between roots. A repeated finger number here accompanies changing pitches and positions.
The bass notes also illustrate why the octave number matters. The first root is C3, whereas the next A is A2, below it. Choosing A3 would preserve the letter but reverse the direction and change the register. Use the black-key groups to identify the letter, then check which occurrence lies near the neighboring route notes. The diagram's F2-to-C3 range gives a compact overview. The score supplies the exact bass-clef positions, including the low notes below the staff, without requiring a separate playing display.
Look ahead during a held note by identifying the next target, not by holding the old key while trying to reach the new one. In bar 2, both hands finish on G4 above A2. Bar 3 will begin on C4 above F2. The upper hand remains in its original five-note area, but the lower hand must relocate. Release early enough for a comfortable move if necessary. That shortened bass ending is a practical simplification, not a reason to insert another count before the next bar.
Compare the three boundaries before attempting a full run. The first changes only the lower target and resets the upper phrase to C. The second changes the lower target again and prepares the upper F on beat 2. The third has a smaller bass move but changes the upper starting note to D. If the third boundary fails, rehearsing only the largest-looking bass shift may miss the actual cause. Name the next note for each hand at the troublesome boundary, then locate each separately before bringing the common count back.
Diagnose a complete attempt without changing every variable
A short run gives more useful information when you decide what you are listening for. On one attempt, check whether the lower part begins only on each beat 1. On another, check whether the upper half notes continue through beat 4. These are different questions. A bass repeated on beat 3 adds an attack, whereas an upper G released just after beat 3 removes duration. Both can make the same bar sound busier or thinner, but their repairs require attention to different hands.
If a boundary feels too quick, count its final upper half note aloud before changing tempo. It begins on 3 and continues through 4. Starting the next bar immediately after saying 3 removes a full beat of preparation. Waiting after saying 4 adds time. Keep the numbered pulse even across 3, 4, 1, 2, and fit the necessary relocation inside it. You may first rehearse that count without playing. Then add the target notes while preserving the same interval between the spoken counts.
The suggested practice schedule below divides attention among finding notes, separate hands, combinations, and transitions. Treat those divisions as examples of tasks, not promises that each task can be completed within its assigned minutes. If the lower route is still uncertain, combining both hands adds demands before the destination notes are known. If the route is known but one hand copies the other, further silent note naming will not directly address the coordination. Choose the simpler task that preserves the specific failure you observed.
The optional fifth bar changes the ending, not the preceding four bars. It adds C3 and C4 together, each lasting four beats. The displayed four-bar playback does not include that added ending, so do not wait for its audio to demonstrate it. First understand the original final G above G, then separately plan the return to C in both octaves. Whether you stop after the written study or add the proposed tonic bar, keep the ending deliberate. Release after the intended duration rather than let uncertainty decide when the last sound ends.
Exercises
Hold while the other hand moves
Describe what each hand does in bar 1. Does the left hand press again on beat 2?
Hint
The bass has one attack; the melody has three.
Worked answer
Count the durations
Right hand · treble clef. Finger numbers: 1 thumb, 2 index, 3 middle, 4 ring, 5 little.
Right-hand attacks are on 1, 2, and 3. The left-hand C3 spans the entire four-beat bar.
On 1, play C3 and C4 together. Keep C3 held while the right hand plays E4 on 2 and G4 on 3. Hold G4 through 4. Do not re-strike the bass with every right-hand note. Release or move into the next bar without inserting an extra counted beat.
Repair a bar-line pause
Your individual bars work, but you pause between bars 1 and 2. What small passage should you practice?
Hint
Practice the transition, not only the two isolated bars.
Worked answer
Left hand moves from C3 to A2
Dots mark keys. Read their labels and check the neighboring black-key groups on your instrument.
Practice the end of bar 1 with right-hand G4 and left-hand C3, then the start of bar 2 with right-hand C4 and left-hand A2. Find A2 silently first. Count “3, 4, 1, 2” without lengthening the gap before 1. Release the bass a little early while moving if needed. When steady, extend to two complete bars.
Give the study an ending
Which notes form the optional fifth bar, and how long do you hold them?
Hint
The exercise begins in C. The optional ending returns both hands to C in different octaves.
Worked answer
Ending on C in two octaves
Dots mark keys. Read their labels and check the neighboring black-key groups on your instrument.
Add C3 with the left hand and C4 with the right together on the new beat 1, then hold for four beats. This returns to the tonal home, C, instead of leaving the phrase on G. Play the melody a little louder than the bass if touch response allows it. Release both keys together after beat 4.
References and scope
MusicTheory.net lessons provide further explanations of notation, rhythm, and chords. Open Music Theory is a longer reference. The keyboard diagrams, exercises, and rock-style study here were made for these lessons. The Beethoven example uses a public-domain melody, transposed to C, not a modern published arrangement.
Casio CT-S300 product information is the reference for the likely instrument. The lessons do not depend on a particular button sequence, USB connection, or automatic accompaniment.