Guitarist and musical director for various artists. Warren was previously in Bob Conti's band Circle Of One and in the group Survival Kit. As musical director for Donna Summer, he introduced his close relative Conti for an audition. Warren, Conti, Virgil Weber, Sal Guglielmi, Doug Livingston and Richard Edelman are referenced as Donna Summer's band on her Bad Girls LP. Mike also performed with percussionist Ken Park from Survival Kit on a concert release by Donna Summer.