i lived in montreal for quite some time and in texas and los angeles so here goes:
jethro tull - 2x
genesis (minus gabriel) - 6x
peter gabriel - 3x
emerson, lake and palmer
pink floyd - 4x
gentle giant
tom waits - 3x
johnny winter - 3x
rush - 2x
heart
kiss - 2x
muddy waters
john lee hooker
james cotton
bb king
robert cray band
charlie musselwhite
stevie ray vaughn - 2x
jeff beck
pat metheny
jeff healey band
john mayall
queen
styx - 3x
sonic youth
white zombie
laibach
motorhead
metallica - 3x including at ultra field
slayer
bad brains
tracy chapman
bruce springsteen
sting
linkin park (manila)
sorry i'll stop here as it seems like bragging
but there were much more: classical and other jazz/blues shows and other rock concerts that i can't recall at the moment. level 42, steve hackett, labelle, april wine, frank marino and mahogany rush, triumph, judy collins, mudhoney, billy joel. juan de la cruz band at up theater in 1970 something, the first farewell concert of apo at the meralco theater around the same time. i was just a concert junkie.