From 1992 to 1999 Mario Aguilar played timbales and other percussion instruments in Tribe of Gypsies, alongside Doug Van Booven on congas and David Ingraham on drums.
Mario plays on the following Tribe of Gypsies albums: 1996's "Tribe Of Gypsies", 1997's "Nothing Lasts Forever" and 1998's "Revolucion 13".
Mario Aguilar also appears on Tree's 1996 album "Downsizing the American Dream".