I don't know much about the flute world, but there's a guy on youtube who's been extending his contrabassoon's range to absurd new lows for years now. Here he i

I don't know much about the flute world, but there's a guy on youtube who's been extending his contrabassoon's range to absurd new lows for years now. Here he is seven years back: https://www.youtube.com/watch?v=G8nRRwTnSbM https://www.youtube.com/watch?v=G8nRRwTnSbM In the ensuing years he's been manufacturing a proper subcontrabassoon and here's a more recent video of its progress: https://www.youtube.com/watch?v=LWQADWh3D8s https://www.youtube.com/watch?v=LWQADWh3D8s