iChanges vs JazzTree

Master jazz harmony directly on your instrument. iChanges helps jazz musicians train chord tones, target notes and jazz changes through active playing instead of pure theory. Use your trumpet, saxophone, piano, guitar or any melodic instrument with real-time pitch detection, or practice silently with the built-in keyboard. Features: • Real-time pitch detection using your microphone • Built-in piano keyboard for silent practice • 15 chord types including Maj7, Min7, Dom7, Alt7, Half-Diminished and more • All 12 keys supported • Transposition for C, Bb, Eb, F and G instruments • Random practice mode • Song mode with MusicXML import • Adjustable tempo and chord duration • Practice chord tones, tensions and alterations • Select specific target notes or train randomly • Local progress tracking and statistics • 14-day learning history Whether you are learning your first ii-V-I progression or refining altered dominant vocabulary, iChanges provides focused, practical training designed for real musicians. No account required. No subscriptions. No ads.

JazzTree is a visual listening guide to jazz history. Explore 39 genres, see how they descend from, react against, and revive one another, and find about 350 records selected to make those relationships audible. EXPLORE THE LINEAGE Follow jazz across time in three complementary views: a focused rail, historical spans, and a full influence map. Filter connections by harmony, rhythm, form, instrumentation, improvisation, timbre, repertoire, social context, and technology. BROWSE 39 GENRES Search and sort genre profiles with concise histories, musical traits, key figures, contested boundaries, and gateway, core, and deep-listening albums. FOLLOW CURATED PATHS Take three ordered listening routes. Each step explains why one record follows another, and your progress stays on your device. LISTEN IN YOUR SERVICE Open albums in Spotify, Apple Music, or NetEase Cloud Music. JazzTree does not require an account. BUILT FOR CAREFUL EXPLORATION • About 350 albums • English and Simplified Chinese • Light and dark appearances • Offline editorial content • Confidence notes for uncertain discographic details • No ads and no JazzTree account Genre boundaries are arguments, not facts. JazzTree shows where scholars disagree and makes its editorial uncertainty visible.