Thumb-under preparation

Why this matters

Scales need the thumb to slip under fingers 3 and 4. Without that motion, scales are jerky.

What you should be able to do

Play 12 slow crossing gestures with even tone and stable wrist alignment.

Estimated focus time: 1.5h

How to practice this on your piano today

1. 1. With your right hand on C-D-E-F-G (1-2-3-4-5), play C-D-E. Then while holding E, slide your thumb (1) under to F.
2. 2. Play F with the thumb, then G with finger 2.
3. 3. The thumb-under should be silent — no audible bump.
4. 4. Practice 12 slow crossings.
5. 5. Reverse for descending: finger 3 crosses over thumb.