I didn't know the Brotherhood themselves when they were active in the early 70s; but I cut my jazz teeth on many of the musicians associated with them, first by hearing them on a Robert Wyatt recording and then by investigating many of the releases on the Ogun label.
I've caught up with the BofB in the last few years. You can get the 1971 'Chris McGregor's Brotherhood of Breath' on CD - its a rather more restrained affair than the live stuff.

As well as the Bremen and Travelling discs mentioned above there's another marvellous live session from 1973 on Ogun called 'Live at Willisau'...one of the few Oguns still in their much reduced catalogue.
I'd also recommend these two:


Both are by a large orchestra Louis Moholo occasionally puts together to celebrate the music of the Blue Notes and Brotherhood musicians. Joyous stuff.
Info on Chris McGregor here:
http://www.bbc.co.uk/cgi-perl/music/muze/i...artist_id=19730Bremen to Bridgewater here:
http://www.bbc.co.uk/music/jazz/reviews/mc...or_bremen.shtmlThe Cuneiform releases here:
http://cuneiformrecords.com/bandshtml/brotherhood.htmlAnd a rather good survey of the Ogun catalogue here:
http://nostudium.blogspot.com/2004_04_01_n...um_archive.html