Welcome! This group exists to gather testers for CraftMuse Jazz Guitar, a free Android app for jazz guitarists, currently going through Google Play's required closed testing phase before its public release.

About the app
CraftMuse Jazz Guitar helps you internalize jazz guitar's ii-V-I progression — both by ear and by hand.

- Guide Tone Practice: automatically plays the correct voice-leading (3rd, 5th, 7th, Root) for each chord in a ii-V-I progression, based on music theory, with the exact fretboard position highlighted in real time.
- Chord Tone Practice: practice chord tones rooted on the 6th or 5th string, in ascending, descending, or round-trip patterns.
- Full fretboard view: all 12 frets always visible, with the currently sounding note highlighted.
- Free key and tempo selection, so you can start slow and build up at your own pace.
- Simple controls: Play, Pause, Stop, Loop — nothing else to get in the way of practicing.

The app makes no network connections and collects no personal data. Everything runs entirely on your device.

How to help test
1. Join this group (anyone can join, no approval needed).
2. You'll receive access to the closed testing track on Google Play.
3. Open the opt-in link (shared here once available) and accept the invitation to become a tester.
4. Install the app from Google Play and try it out on your Android device.

Who this is for
Anyone with an Android phone and a Google account — you don't need to be an experienced jazz player. Guitarists at any level who are curious about ii-V-I practice tools are welcome.
Thank you for helping test CraftMuse Jazz Guitar before its public launch!

Japanese