Over the years, learning to play songs on the guitar by way of tabulature (or tab) have certainly become more interactive. What used to be an exercise of finding books and sheets of music for your favorite songs, chords and tabs rapidly made their way onto the web. Nowadays, dozens of sites host extensive libraries of tabs to help guitar players of all levels perfect that catchy riff or solo. One such site is Songsterr, which started back in 2008. Besides being an archive of over 500,000 tabs for the guitar, bass and drums, it’s highly unique in that it’s also an online tab player that lets users follow along each tab as the song (with audio) is being played. The Songsterr app for the iPhone and iPad works much like its web counterpart and practicing tabs on-the-go doesn’t get much better than this.