You know how the saying goes.
“Throw it at the, Err… Bass, See what sticks”. 
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Maybe museum putty – I have some that comes in little discs that I use for all sorts of things (planters, anchoring a charger or a light on my dresser, etc.) That might be a bit more secure than double-sided tape to help you figure out the best position, and it won’t leave any goo.