A "professional singer" is someone who sings as a job or career, getting paid for their talent and performing in various events or venues. Full definition
«Barefoot Opera «is a developing a pedagogy and philosophy for working with professional singers in which the whole singer as vocalist and human being is nurtured. (fourthtrimesterpodcast.com)
Newsha Tavakolian provides portraits of professional singers who are forbidden by Islamic principles in Iran because they are women. (widewalls.ch)
A particularly interesting feature of these functions is the musical party in which professional singers perform to the accompaniment of drums and other musical instruments. (religion-online.org)