◆This is a one-time purchase app that lets you practice various jazz improvisation phrases with backing tracks. Fully compatible with transposing instruments such as trumpet and saxophone.

【Main Features】
・Melody Guide：Phrases scroll along with the sheet music and backing, allowing you to practice in sync. Great for beginners too!
・Backing with Drums：The drum keeps the rhythm so you can focus on groove while practicing.
・Automatic 12-Key Transposition：Practice without worrying about keys, even for C, Eb, and Bb instruments.
・Variable Tempo：Easily change the tempo to various patterns via settings.
・Key Step Adjustment：Optimize difficulty by transposing up a half step, perfect fourth, or perfect fifth.
・Clef Switching：Switch between treble and bass clefs. The actual pitch follows accordingly.
・Backing Pattern Switching：Freely change styles like Swing or Bossa Nova to match the mood.
・Backing Only Playback：Practice improvisation realistically without the melody line.
・Favorites Registration：Collect your favorite phrases in one place for instant access.
・PDF Export：Convert phrases into sheet music PDFs for printing.
・Simple UI & Easy Operation：Minimalist design makes functions clear at a glance.
・More Phrases Coming Soon：Content will be expanded with updates.

【Recommended For】
・Jazz beginners to advanced players
・Wind players who want to improve improvisation for big band or jam sessions
・Those who want to systematically learn standard jazz phrases
・Those who want to manage sheet music, backing, and tempo all in one app

【One-Time Purchase for Peace of Mind】
・No additional payments or subscriptions
・Future phrase additions will also be provided for free