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"If you're prone to serenading your friends while doing air guitar, the new Songful iPad app from InstruMagic and Ultimate Guitar is for you.\r\n\r\nThe $2.99 app lets you strum through ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/apps/2012/11/15/instrumagics-songful-links-up-with-ultimate-guitar-to-turn-your-ipad-into-a-sweet-touch-guitar/>