### Clue: (300+10)/¼ = score from free play? (9)
### Answer: CAPRICCIO 
 ### Explanation: Definition: score from free play
An envelope ('/' – divided by) of APR I (All Fools' Day, '1/4' in the British notation) in CCC ('300′) plus IO ('10'). A capriccio is a free-form musical composition.