PERSON@1 -LRB- # NUMBER@1 -RRB- Active : NUMBER@2 -- NUMBER@3 Instruments : custom percussion , backing vocals Release contributions : Slipknot Demo -LRB- NUMBER@3 -RRB- After the departure of LOCATION@1 , PERSON@1 was recruited to fill the spot left on percussion and backing vocals .

PERSON@2 -LRB- # NUMBER@1 -RRB- Active : NUMBER@3 -- present Instruments : custom percussion , backing vocals Performed in : all PERSON@3 releases from PERSON@3 -LRB- NUMBER@4 -RRB- to present After PERSON@1 left the band , PERSON@2 joined PERSON@3 as the new percussionist and backing vocalist .
