I choose to believe that PaRappa the Rapper is the prequel to Guitar Hero, DDR, and all of the other music themed games that are out today. It had a great sound track and the game was played by pressing the buttons to the beat.
Without PaRappa the Rapper there would be no Rock Band, which means no 12 year-olds would know about the Beatles, so we must sing, no, rap, the praises of PaRappa the Rapper.