ChordLoop vs JazzTree

ChordLoop is the fastest way to find your next chord progression. Pick a key, tap a chord, and hear it instantly. Stack chords into a progression, loop it at any tempo, and let the ideas flow. Whether you're writing a song, learning theory, or just noodling on the couch, ChordLoop turns "what sounds good next?" into a few taps. WHAT YOU CAN DO • Play every chord in any key — major and minor, with the music theory built in and correct • Hear real sound generated right on your device — nothing to download, works fully offline • Flip on 7th chords for a richer, jazzier feel • Loop your progression at any tempo and hear it come to life • Start from classic progressions — pop, 50s, ballad, and more • Save the progressions you love • Share a progression with a single tap CHORDLOOP PRO — one-time $3.99 unlock • Export any progression to MIDI and drop it into GarageBand, Logic, or any DAW • Drum grooves that turn your progression into a real track • Six more instruments — Organ, Nylon Guitar, Synth, Strings, Music Box, and Marimba Built for songwriters, producers, guitarists, pianists, ukulele players, and anyone learning music. No account. No ads. No subscription — the full songwriting core is free, and Pro is a single one-time purchase.

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.