70-note "Bottle Organ"
I'm looking to create a 70 note bottle organ, inspired by this video:
Except I'm wanting to build mine in a more "automatic" state - played via MIDI notes, an arduino and lots and lots of solenoids making spoons hit the bottles.. That side of it I've got covered thanks to other excellent instructables which have taught me a lot about micro electronics.
What I am currently trying to work out is if there is a way to change the pitch of bottles in any way except simply adding water. Would another liquid achieve the same results with less "spill risk"? Does it even need to be a liquid? I'm guessing it needs to be a liquid as I believe the physics of the noise made when a bottle is struck is based on the water absorbing vibrations, making them slower and lowering the pitch.
If anyone has experience tuning multiple bottles to be struck as an instrument then please do reply! Alternatively if anyone has any novel suggestions for things which would be easier to persuade 70 notes out of then please also reply!
End goal - be able to play flight of the bumblebee at full speed with chords and out-nerd the guys in the video. Ideally on bottles.