This is a Fillmore show I believe. The band is announced by Bill Graham, and I don't think he had many shows if any at the Winterland. And once the mix gets straightened out (the problem has been well described by a previous reviewer), it is a wonderful presentation of one of my favorite short-lived bands of the era. Even though the lineup was the HP II, this show occured prior to the recording of that album, and so most of the songs are from HPI. Which is no problem as I think it was the better of the two albums.
It's too bad that they were another band from that time that burned out quickly. Probably as much from their plunging head first into the San Francisco drug scene as from any internal problems. Not unlike another SF band, Moby Grape.
But this is a great disc, wonderful for headphones. And Michael Terzga's drumming is much more evident, and powerful here, than on the albums. And not only due to the mix. Compare them, for instance, with some of the 1967 Airplane live stuff and it will be apparent just how tight a band they were.
Five star memories and overall performance, but an annoying - though not excessively so - mix through the first third.