in no particular order:
Wally Gonzalez (Juan Dela Cruz Band, Wally Gonzalez Band)
Perf De Castro (Rivermaya, Triaxis)
Sammy Asuncion (Eurasia, Spy, Kalayo)
Ian Umali (P.O.T., Wunjo)
Francis Reyes (The Dawn)
Chikoy Pura (The Jerks)
David Aguirre (Razorback)
Jun Lopito
Mike Villegas (Rizal Underground)
(the late) Teddy Diaz (The Dawn)