Updated to support new Android versions
TwinNotes is a concentration-like game that teaches to recognize music notes by ear and improves your tonal memory. Click on an empty card to hear music tone. A yellow border appears around it. Find a card with a note sign that matches this tone and click on it. If tones matches, pair of cards disappears. If not, red border appears around both cards for 3 seconds. Continue until there are no cards on the screen.
