Or Sounds Incorporated, 1961?
By the way, one tidbit I got from Mark Lewisohn’s new book Tune In is the fact that there was a skiffle group in Liverpool in 1957-58 called the Darktown. That’s the first example I know of of the phenomenon, which became common in the 60s, of giving the band a name that is neither “The Somethings” (i.e., plural) nor “The Something Quartet”/“Something Singers”/etc. (i.e., containing a “group” term) nor “Somebody and Somebody”. Prior to this, the earliest such group I knew of was the Essex (1962).