Conversation so far:
What type of guitars did Fred Frith play?
Fred Frith has used a Gibson ES-345, an old 1961 solid body Burns, a modified 1936 Gibson K-11, and a homemade six- and eight-string double-neck guitar.

Question: Was there anything interesting about his playing technique?
Self-contained rewrite: Was there anything interesting about Fred Frith's playing technique?