The job duties of a freelance musician mainly entail playing music in different settings for various events with an audience, from weddings and birthday parties to studio sessions, shows, and concerts. You may play one kind of instrument or many instruments based on your musical background and the needs of your client. As a freelancer, you may find clients yourself or work with an agency to book gigs and performances. Some of your responsibilities include bringing necessary musical equipment and instruments to a gig, setting up the equipment, and communicating with event coordinators to facilitate your musical performance. You may be a solo musician or be hired to play with other musicians.