I feel sure the "Wayback machine" has a version of this thread, so forgive me of bringing it up again.
What brought this up is that in getting rid of my boxes, I came upon my "silent" concertina.
Many years ago I got a casting call from a producer who was putting on "Carnival".
The show opens with an actor, alone on stage, playing the theme song "Love makes the World Go 'Round" on a concertina.
The producer said he had tried an accordion in the pit, but it didn't sound right.
So I did an audition, and got the position.
Now, the next thing was to provide the actor with a concertina.
So I took an old 20-button Anglo and gutted it.
Then, during rehersals I had a spotlight trained on my hands so the actor could copy the moves.
Mostly, they just pump away!
Bob Hope in the Paleface
Bing Crosby in High Society
Desi Arnez in Forever Darling
Stan Laurel in The Big Noise
? in The Milagro Beanfield War
Alf Edwards in Moby Dick?