Songful is a new type of guitar app that lets you play songs on your iPad (more platforms coming soon) even if you don't know how to play guitar.
The magic comes from having the songs embedded in the guitar. You can choose any song from Ultimate Guitar's 200,000+ songs database. Once a song is selected, the lyrics and chords load. Playing is done by switching through the song's chord sequence with a single tap, and strumming freely on the strings (singing along recommended).