Play any worship song —
in your key, by Sunday.
The browser studio for the keyboard player at church. Get any song’s chords and number chart, add the gospel voicings, lock the groove — and walk into rehearsal ready. One tab, nothing to install.
Multiple engines.
One Sunday.
Not toys, not demos — the engines worship keyboard players reach for to learn a song, voice it richer, and lock the groove. No years of theory required.
GrooveLock
Live drums and chord beds that lock to your key, voicing, and feel in real time. Press play, keep playing.
Reharmonization Engine
Drop-2 voicings, secondary dominants, tritone substitutions, and altered tensions — generated on tap from any chord or progression.
MIDI Chord Analyzer
Drop in a MIDI file and get every chord named — inversions, extensions, and altered tensions detected instantly in your browser.
Progression Lab
Build a progression on a visual timeline, audition it instantly, then export the whole arrangement as a standard MIDI file for your DAW.
From the song
to Sunday.
Hear the song. Chart it in numbers. Voice it richer. Lock the groove. Four steps, same tab, rehearsal-ready.
Hear it
Drop in the song, get every chord named in seconds — right in your browser.
Chart it
Lay the progression on a timeline — with the Nashville numbers, so it works in any key.
Voice it
Add the gospel colour — drop-2 voicings, secondary dominants, passing chords.
Play it
Hit play. Live drums and chord beds lock to your key for rehearsal.
Real songs.
Chords & number charts.
The songs your church actually sings — every chord, plus the Nashville number chart so you can play them in any key.
Theory, voicings,
& the Sunday set.
Written for the worship keyboard player. No filler.
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Stop guessing the chords.
Start playing.
Every tool the worship keyboard player needs — hear it, chart it, voice it, play it — in one tab. Built for the player who carries the Sunday set.