This is a good representation of how the band sounded live back in the mid 70's. There is a decent balance of songs off their first three albums, but it would have been good to have expanded it to a double-album.
The songs are generally heavier than the studio versions. On the good side, the songs are somewhat rearranged, so the listener gets something new. On the down side, the recording quality is a bit raw, loosing the polish that makes the studio versions sound much better in contrast. Sonja Kristina, though a great singer, tends to over-exaggerate the vocals in this live setting, for added emphasis. Although this might have seemed like a good idea at the time, it unfortunately makes her singing a bit annoying. She does a much better job on the studio albums.
This is still a must for Curved Air fans. For those new to the band, I'd recommend their first two albums instead (Air Conditioning and Second Album).