Pip
If your singing already I'm sure someone who already plays English (for a start ) would welcome the chance to be a duo ( 0r more ). But good luck and thinking to join us concertina 'ists (is that right ?)
But they don't come cheap. An English concertina I mean.

Or even a guitarist.

Don't look at me I almost play an anglo. Among other things.

But I know. You want to do it yourself.
CHas