The way the Bose hearing aids are designed males them great for keyboards. The tip that is inside the ear has a wax guard that permits sound to enter the ear through several openings in the wax guard. In my case, I lost much of my high frequency hearing ability, but I can still hear low frequency sounds well. The Bose hearing aid allows all those low frequency sounds to be heard the same as if I didn't have a hearing in in place, while at the same time amplifying those high frequency sounds that I could no longer hear without the assistance of the hearing aids.

Good luck,

Gary