** Available to Google Play Music **
Spectrum is Music Visualizer app.
This app generates some visual effects from Google Play music, your music library or microphone.
1. Tap the music button (♪).
2. Select your songs from music library. These songs should be on your device.
3. If you select "Google Play Music", please play songs on "Google Play Music" and back to this app
When interstitial advertisement appeared, after several seconds, a close button will be shown.