1. Mozart: a scale inside a phrase
Purpose: transfer a reliable scale route into music with its own starting note, rhythm, harmony, and destination. Begin with Mozart, Sonata in C major, K.545, first movement, measures 5–6. Count from the opening full measure of the Allegro.
The first RH run travels A4–A5–A4; the next travels G4–G5–G4. These are white-note routes within C major, not A major and G major. Each bar begins with an eighth note, followed by fourteen sixteenths. Do not shorten the first note to make the passage resemble a uniform technical exercise.
The LH does not double the scale. It plays on beats 1 and 4, with two quarter rests between. In measure 5, the first F is F4; the later F/C dyad is F3/C4. The fixed bass clef in this study keeps the pitches intact while avoiding the source’s short clef change.
Find the structural moments
Play the LH alone and count all four beats. Then play RH alone, identifying the highest note and the descent to the next bar. Combine only the RH notes that coincide with the LH attacks before restoring the intervening sixteenths. Sparse accompaniment still needs exact timing.
Source: adapted from Alejandro Sierra’s Mutopia 998 transcription, under CC BY-SA 3.0. Pitches and durations were checked against that transcription; its underlying edition is described only as IMSLP. This is not a claim of autograph or Urtext verification. Use your full edition for phrasing, dynamics, and fingering.
2. Restore the music after isolating the mechanism
A four-pass practice method
- Map: name the starting note, turning note, and arrival. Read the next measure too; the arrival is part of a phrase, not merely the end of an exercise.
- Route: play RH alone slowly, keeping the opening eighth note twice as long as each following sixteenth. Choose the crossing fingers from your edition and test them in both directions.
- Coordination: add the LH on its written beats. Count the rests rather than shortening them to follow the moving hand.
- Phrase: return to the full score and restore its slurs, dynamics, articulation, and continuation. The reduced example is a practice view, not a replacement performance text.
In measure 5, the top A falls on beat 3. Listen through that turnaround rather than automatically accenting it because it is the highest note. In measure 6, the corresponding G also falls on beat 3. Compare your edition’s shaping of the two bars; their related contours need not sound like two disconnected exercises.
Use rhythm practice locally
If a crossing is uneven, take the note before it, the crossing itself, and the note after it. Try a slow long–short version and a slow short–long version, then restore the original note values immediately. Do not apply a dotted pattern to the whole excerpt without accounting for its opening eighth note.
Before increasing tempo, test starting directly at the descending half. If the run works only when launched from the beginning, that half may be relying on momentum rather than a known route.
Transfer the method, not a fingering formula
For your next passage, write down its actual key, altered notes, range, starting finger, and following chord or melody note. A familiar scale can require a different final finger to reach that destination. Keep the composer’s written rhythm and articulation in view throughout.
Further Beethoven and Chopin examples will be added after their exact passages and editions have been reviewed. This chapter currently provides one sourced case study in depth rather than presenting unverified excerpts as finished material.
Checkpoint: the full phrase improves after the isolated work, including the accompaniment and arrival. Speed in the reduced pattern alone is not the final test.