Conversation so far:
What type of guitars did they play?
Fred Frith has used a number of different guitars, including homemade instruments, over the years, depending on the type of music he is playing.
Was there anything interesting about there playing technique?
Frith uses a variety of implements to play guitar, from traditional guitar picks to violin bows, drum sticks, egg beaters, paint brushes, lengths of metal chain, and other found objects.
Has he influenced anyone from using these techniques?
CANNOTANSWER.

Question: Anything else interesting about there guitars?
Self-contained rewrite: Besides techniques, is there an interesting feature about Fred Frith's guitars?