This improv game is in the following improv game categories:
The seller presents several CDs, each CD gets an explicit style/artist, and the seller offers to demo an appropriate song. E.g. for the graduation, "How about a Lady Gaga album? Her new album is called "Doctor Love" and it has this great song "Measles". One or more other players (and preferably a musician) then perform the song.
After 3-4 songs the buyer agrees to buy the album and scene ends.