 He has also worked with the Paul Winter Consort, Dave Liebman, Joe Lovano, Allen Farnham, Carly Simon, Betty Buckley, Rabih Abou-Khalil, Simon Shaheen, Marbin, Trichy Sankaran, Osvaldo Golijov, Nguyên Lê, Badi Assad, Steve Shehan, Esperanza Spalding, Elliot Goldenthal, Sergio and Odair Assad, Daniel Schnyder, Nancy Wilson, the Wayfaring Strangers, Steve Gadd, and Laszlo Gardony.He appears on more than 225 audio recordings and movie soundtracks.Haddad was a full-time professor at the Berklee College of Music from 1992 to 2010.