Company Synaptic Stuff, LLC created these great apps:
Pocket Jamz Guitar Tabs - Giant Catalog of Interactive Guitar Songs with Tabs, Lyrics and Chords, Pocket Jamz Guitar Tabs Lite - Giant Catalog of Interactive Guitar Songs with Tabs, Lyrics and Chords, Pocket Jamz Piano Notes - Interactive Piano Songs, Scores, and Sheet Music, Pocket Jamz Piano Notes Lite - Interactive Piano Songs, Scores, and Sheet Music, Piano Genius - Free Piano Game with Classical and Pop Songs, and others..
