semi-professional 
adjective
Receiving payment for an activity but not relying entirely on it for a living: a semi-professional musician...
- The Dhol Foundation is a collection of professional and semi-professional UK musicians giving the centuries-old drumming traditions of the Punjab a modern twist.
- The only little problem with that raise in salary is that amateur and semi-professional musicians won't be able to play at all.
- Children as young as 10 years old perform alongside the ensemble's core of semi-professional adult musicians.
noun
A person who is engaged in an activity on a semi-professional basis.We labeled them hobbyists, amateurs, serious amateurs, semi-professionals, professional nonperformers and performing artists/teachers....
- By 1998 Ulster, Munster and Leinster each had 21 full-time professionals and 10 semi-professionals but before that all of the teams were hybrid operations.
- This is a song-writing competition open to all amateurs, semi-professionals and professionals.