One just plays at work

• Case: it involves singular person on the fiddle?
• Helpful to first violinist for example
• Tuba player, e.g
• One who plays without vocals
• Band member
• Someone who plays a musical instrument (as a profession)

WordNet Word definitions in WordNet
n. someone who plays a musical instrument (as a profession) [syn: musician , player ]

Wiktionary Word definitions in Wiktionary
n. One who plays a musical instrument, as distinguished from a vocalist

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Instrumentalist \In`stru*men"tal*ist\, n. One who plays upon an instrument of music, as distinguished from a vocalist .