Musicians' unions are organizations that represent the interests of professional musicians. They provide support in areas such as fair wages, working conditions, and legal rights. By joining a union, musicians can access resources like contracts, health benefits, and networking opportunities, which can help them advance their careers. These unions also advocate for musicians' rights at local, national, and international levels. They work to ensure that musicians receive proper compensation for their work, whether in live performances or recorded music. Notable examples include the American Federation of Musicians and the Musicians' Union in the UK.