Sony's first-party karaoke franchise has long been a jewel in the crown for the Playstation brand. It's universal, pick-up-and-play accessibility has been attracting non-gamers to the Playstation 2 when the Wii was still just a pipe dream.
For those coming late to the party, the core mechanic is as so: the player sings the on-screen lyrics of one of forty-odd songs into the supplied USB microphone, and is awarded a score based on the pitch of their voice, which is also represented on-screen. It's just like karaoke at your local pub on a Thursday, but with a videogame high-score tacked on. -