The rock and roll bands in the 1950s used a keyboard operated bell
machine (glock) called a 'Jenco'.  It worked very well in the studio,
but required microphone pickups to get enough volume on stage.  I have
always thought of it as a Chrysoglott, since it has a piano-like hammer
striking a metal bar over a resonator.

I still have ours.  I have thought of automating it to play with the
piano.

Jon Guy