Possible Clues:

• Use Bob's lad devised for instrument
• Clipped shot during game of tennis one's played
• Bent over by fish that one plays � the biggest of its type
• Musician suffering blues so bad
• THEME ANSWER 1
• Duplicate perch, relatively speaking, in the pit
• What might be played by graduates during tennis match?
• Instrument finds a sort of fault with fish
• Run to get singer an instrument
• Stringed instrument with a scrolled 66-Across