HarmonyAngel
MIDI harmony processor
Turn one MIDI note into chord-aware harmony. Select chord slots, step through progressions, shape voicings, and use HarmonyAngel standalone or as an AUv3 MIDI processor.
Music and technology studio
BW Innovation TW
A Taiwan-based studio driven by people with passion in music and tech. We build expressive tools that help musicians explore chords, MIDI performance, and creative play.
About the studio
Creative music apps from Taipei, Taiwan.
BW Innovation TW is a studio shaped by musicians, designers, and software developers. Our work sits where musical intuition meets practical engineering.
The earlier BW Innovation archive introduced PianoAngel, an iOS app made to help people play piano beautifully and easily. The current app lineup continues that same direction: making chord performance, MIDI harmony, and expressive touch control more approachable.
Apps
New tools for chord-aware performance.
RazielReveal
Separate Songs, Find Your Part
Import a song and separate lead vocal, backing vocal, lead guitar, and instrumental residual into an on-device playable mix.
Heavenly Chord Player
Expressive chord performer
Choose rich chords and slash roots, then perform chord tones from the iPhone or iPad screen. Optional Lightpad Block M support adds expressive hardware control.
Privacy and terms
Your music data stays on your device.
No tracking
Our apps do not track users or collect analytics.
No account
No login, profile, or cloud account is required.
Local storage
App settings and musical data are stored on the user's own device.
Support
Questions, feedback, or app help.
Reach BW Innovation TW by email or join the Discord support space.