Not many people remember this, but the first version of Shazam in 2002 required you to dial a four-digit number, hold your phone up to a song, and wait for a text message back with the track name and artist. Even then, the company was already running a music recognition algorithm to identify songs, years before the iPhone or iTunes Store existed. Shazam founder @Inghelbrecht explains: "We put [Shazam] together before the iPhone or the iTunes Store existed. So with the first version, which…