Answer: SOURNOTES

AnswerCrossword Clue
SOURNOTESClunkers of sorts
SOURNOTESInstrumentalists' bobbles
SOURNOTESPoor players hit them
SOURNOTESSingers' slip-ups
SOURNOTESProducts of Benny's violin.
SOURNOTESBad things to hit
SOURNOTESMusicians' slip-ups