3 Doors Down Frontman O' Say Can You See Why We're Playing the Inauguration

1/19/2017 12:58 AM PST

3 Doors Down Frontman Proud to Play at Inauguration

EXCLUSIVE

3 Doors Down isn't necessarily rocking for Donald Trump ... they're rocking for America, dammit!!!

We got frontman Brad Arnold leaving rehearsal at the Lincoln Memorial Wednesday night, and he clearly has no reservations about playing Thursday night's Make America Great Again event ... for which the band got a ton of backlash.

Brad's got no shame in the game.