Some time back, I was introduced to a group, I think were called, ‘The Windbags’. This group had 4 or maybe 5 ladies from the opera company in it, and also a man who was blind, who accompanied them as their pianist. They sang in concerts, which were good fun, always including some comedy. They were really great, & I saw them perform a few times, and then they seemed to go from the scene. I am sorry I don’t have much more info at the moment, but if needed & you like to contact me, I can possibly find out more, as I can contact one of the singers parents.  Hoping this may be of some interest to you.