Conversation so far:
Who were the original members of the band?
bassist Jeremy Shatan left New York City for the summer and the remaining members Michael Diamond, John Berry and Kate Schellenbach formed a new hardcore punk band with Adam Yauch.
Who came up with the Beastie Boys name?
CANNOTANSWER.
Where did they first perform?
In November 1982, the Beastie Boys recorded the 7" EP Polly Wog Stew at 171A studios, an early recorded example of New York hardcore.
How many copies did Polly Wog Stew sell?
CANNOTANSWER.
What did they do after the Polly Wog Stew release?
On November 13, 1982, the Beastie Boys played Philip Pucci's birthday for the purposes of his short concert film of the Beastie Boys, Beastie.
How well did Beastie do?
later went on to be certified Gold by the Recording Industry Association of America (RIAA).
Which album was their first certified Gold album?
It was a part of the new lineup's first EP, also called Cooky Puss.

Question: Who did they add for the Cooky Puss EP?
Self-contained rewrite: Who did the Beastie Boys add for the Cooky Puss EP?