H/J for normal whistle A/S/D for alt whistle (prob the one i'm going with because a tiny engine with a giant whistle is REALLY FUNNY to me) arrow keys to mess with the whistle volume space to play movement sounds that don't make much sense because it only has one cylinder and prob wouldn't ever go that fast because it's a narrow gauge geared engine (though the cylinder could get going really fast and make it sound like that maybe... i imagine Sprocket would be geared at 2:1) 1 to turn on an air pump that doesn't exist 2 to turn off the nonexistant air pump press m to play music i guess
I've spent a few days workshopping the idea and I'll keep workshopping the idea until I get my real computer back. Sprocket is FULL OF SURPRISES!