Armstrong is also an accomplished and sought-after songwriter for other artists.
Armstrong won a Grammy Award for his work with Jimmy Cliff and Pink and he has also worked with Joe Walsh.
Josh Homme, frontman of Queens Of The Stone Age, has spoken out against Tim Armstrong, singer from Rancid.
This came after Armstrong publically attacking Homme for dating his ex-girlfriend, Brody Dalle.
Homme reportedly received multiple death-threats from various Rancid fans in response to Armstrong accusing him of 'stealing' Dalle from him.
Related: Check Out Brody Dalle's 'Rat Race'Homme remains with Dalle, and decided that the best response would be to stay silent in order to disprove the rumours. They were saying, 'We're gonna kill you.' And I was saying, 'I'm six-foot-five and I have red hair and I'm not hiding. But not saying anything became the only thing that had any truth to it.