Our church has a position of music director. She plays piano & organ. She directs the volunteer choir. This is a part time, but paid position. She has to rehearse with the choir & plan the music for the weekend masses. If there is a holy day or funeral during the week, she's expected to play & sing at those masses too. Sometimes we have a guitarist play, but that person does it on a volunteer basis. Many Catholic parishes are set up this way with the music director being a paid position & other musicians/singers/choir being volunteers. Should the music director be paid? Of course, especially if they're full time at the larger parishes.