What sort of place is Ernie's ?

From the text:

"Ernie's is this night club in Greenwich Village that my brother D.B. used to go to quite frequently before he went out to Hollywood and prostituted himself. He used to take me with him once in a while. Ernie's a big fat colored guy that plays the piano. He's a terrific snob and he won't hardly even talk to you unless you're a big shot or a celebrity or something, but he can really play the piano. He's so good he's almost corny..."

Ernies is a nice place that has a fat guy playing the piano. He's so good hes almost corny, Holden says