He is in Mike Dee's Grove its in your map or just go to Cresent Beach and look around to see a sign that says Mike Dee's Grove which is to the right of Candace and Carmen.
Most likely the Crazy Frog or the theme to Beverly Hills Cop. In a Family Guy Episode in which Peter goes back in time he says Dee Dee Dee etc. and another Dee Dee Dee, you may recognize that from...