Breaks Up Screaming Match
After Rock Show
It all went down outside the Troubadour in West Hollywood -- where legendary acts like Bob Dylan, Joni Mitchell, Elton John and Richard Pryor played back in the day.
Morello was chillin' outside after his show ... when the two guys began screaming at each other .... but somehow, Tom managed to get each side to apologize.
Calm like a bomb.