This is sonically and technically amazing stuff. It’s like a Paulstretch creation done live by real musicians in real time. Or maybe it’s like being in Inception and hearing what’s happening one dream higher. This is a 4.5 minute piece, slowed down (due to being filmed at 300fps). I’m guessing to get the sound quality to be equally high when time stretched he recorded either at (above?) 192kHz/48bit or one of those DSD recorders that go at around 5mHz/1bit.
(edit: it was actually time stretched using Michael Klingbeil’s SPEAR) – I wonder if it’s even possible to record fast enough to get this type of effect?
Either way, amazing stuff: