Los Angeles quartet Ambrosia, whose founding members included guitarist/vocalist David Pack, bassist/vocalist Joe Puerta, keyboardist Christopher North, and drummer Burleigh Drummond, fused symphonic art rock with a slickly produced pop sound. The group was discovered in 1971 by Los Angeles Philharmonic conductor Zubin Mehta, who featured Ambrosia as part of a so-called All-American Dream Concert.