The latest experimental feature in Musical Pro for Android is a “light-up” play-along piano for practicing using the touchscreen piano. It is now available in the Android Market and is a free update for all current Musical Pro customers. For those who haven’t yet made the upgrade to Musical Pro (from Musical Lite, which is free), it is still just $1.99 in the Market.

When a note is to be played, the corresponding key lights up in red (it is difficult to see in the attached video on the black keys) and the program waits until you press it to continue. As you play the song, Musical provides a chordal accompaniment in the background at the tempo you play.

This video demonstrates the 3 songs, When the Saints Go Marching In, Twinkle Twinkle, and My Bonnie Lies Over the Ocean, played on an Android G1/Dream (but it also works just as well on the Magic/MyTouch)