Can't even play for long enough to get more air though. It's not so much a circular breathing issue rather than being able to control the flow of air into it in the first place :o/
(, Thu 7 Feb 2019, 23:20, Reply)
or shorter lenghth, the big bass ones are harder to get going. try a bit of pvc waste pipe about 4ft long.
(, Fri 8 Feb 2019, 9:54, Reply)