I'm taking part in a performance of this tonight. the basic idea is that a group is split into 4 sub groups and even given a bottle of liquid 'tuned' to a certain tone. they then follow basic drinking isntruction (gulp, swig, sip, no drink) and hooting (blowing over the bottle) everyone has different instructions so the bottles empty at different speeds casuing a lot of different tones at the same time and there are no rythms, speeds or pre defined timings. eventually everyone ends up with an empty bottle and the tones all come into line again. we had a rehearsal last night. it was fun.

anyone done it?