Perhaps of interest to whistle players; I have some alghoza for sale. Almost the same fingering as a normal whistle. Lowest note is B, three fingers closed is E, so it’s more or less a low B whistle with a drone. More info about them on this thread:
https://forums.chiffandfipple.com/t/fs-alghoza-double-whistle-from-india-bansuri/83565/2