"Barry Pohl and the Concessions" was formed in 1966 as "the Basement Concession" with the following lineup: Jeff Breeh (bass), Eddie Taylor (drums), John Buono (rhythm guitar), Ron Renninger (vocals) and Barry Pohl (vocals). Ralph Affoumado was manager and his business partner, Alan Braverman, funded the recording; Bravamado Enterprises is a reference to Braverman.
Renninger generously contacted me last year to provide these details on the band. He explained to me that he formed the band when he was only 16, the band's name was changed to Barry Pohl and the Concessions for marketing reasons, and that he and Pohl were the only band members who performed on the recording of "Horn, Harpsichord..."; the rest were session musicians.
Another interesting post on this recording can be found here: http://emscee.com/foolsparadise/?p=1343.
The recording quality is pretty bad on the original.