[0] Damn. Scrub to 1:00 if you want the real tea. In the first part he’s playing very high, in standard bass flute territory. At the minute mark it sounds like a string bass. The amount of air you need to push through an instrument that size has to push some kind of anatomical limit.
Is it more air than, like, a tuba, or whatever would be a more familiar so-low instrument? Would it be cheating to add an assist like on a bagpipe? What about mechanical airflow like a compressor or air conditioning vent?
Fun thoughts! Surprisingly, a normal (soprano) flute takes almost as much air as a tuba. The instrument featured here would definitely take at least tuba volumes of air.
None of the assists you mention would be worth it because you would lose almost all of the nuance in tone quality. It is no accident that bagpipes tend to have a fairly uniform sound and volume. And that’s assuming you can somehow prevent the additional noise these techniques bring with them.
