eraserheads!!!!!!!!!!!!!!
they shattered the door between the underground and mainstream para marinig ung iba pang magagaling na pinoy rock bands
I agree. The Eraserheads' songs allowed rock to be pop.
So, I say:
Eraserheads - for bringing rock back to the musical map
Wolfgang/Razorback (can't really take the two apart, IMO) - for bringing the bite back to rock
Juan dela Cruz - for making rock Pinoy
These are the big three. Can't get any other Pinoy band with the greatest impact than these three.
Oh... does VST & Co. qualify as a band?