Bruce's Fingers
Arguably the best of my large ensemble adventures - every time I listen to this I'm reminded of things I can't believe I did... But check out SFE's 'Positions & Descriptions' too, and make your choice
Also recommended by amere3, Persuasion A, Coxhill/Haslam/Hession/Rutherford/Fell and 16 others, Bruce's Fingers, Something Else, Graham Halliwell & Simon H. Fell, Mick Beck Stephen Grew Duo, Hession / Wilkinson / Fell, Jo Fell, Hession / Wharf / Fell, IST, SFQ, Su Lyn, Philip Thomas, Badland, Ian Smith / Simon H. Fell / Harris Eisenstadt, The Geordie Approach, ZFP Quartet and Hession / Morgan / Fell.