Cycle through all 12 keys in 12 days with circle-of-fifths rotation. Auto-generated practice menus for each day help you master every key evenly.
All 12 keys in 12 days
A new key is selected automatically each day with a practice menu matched to your level. Just open the app and start playing.
Pick any category you want to work on. Random mode keeps things fresh.
Long Tone
Tone stability and quality improvement
Scale
Scale practice in various patterns
Arpeggio
Broken chord practice
Tonguing
Tongue control exercises
Interval
Interval leap practice
Lip Slur
Slurs between harmonics (brass only)
Metronome
Keep a steady rhythm during practice
Drone
Play along with a reference pitch for better intonation
Tuner
Check your pitch in real time
Score View
See practice phrases on a staff
Focus View
Large note display with tuner integration
1,000+
players practicing
12
keys covered
11
instruments supported
“Having a different key every day means I no longer avoid my weak keys.”
“Metronome and tuner built right in — everything I need for fundamentals in one app.”
Core features are free. Upgrade to Pro (¥300/mo) for all keys, levels, and features.