The fact that all three were played in Birmingham is significant, especially since there are only two documented shows where this occurred. It appears that this show was the final performance of Sysyphus, as well as one of the last for the other two. It sounds a little muffled at times, though at other times sounds quite good. Blues is slower and a little heavier than the other versions I've heard. This version has a two minute drum section before the source cuts off.
Some songs appear to be cut off slightly at the end, though nothing too bad.
Also, there is drop in high frequencies when the vocal section of AHM begins and which seems to last the entire section. The result is a very muffled sound that makes the vocal section hard to enjoy. The problem is that, depending on where you live, you may not be able to get your hands on these releases. They temporarily dropped Cymbaline and tried out five new songs in an effort to develop a new set list that would form the basis for all shows through the end of 1971, with a few minor changes. Given the rarity of the material played at the Birmingham show and the fact that this show has not been commercially available on cd in a very long time, if ever, this release is a must have for hardcore Floyd fans if you can find it, even though the sound quality is not high.