Final answer:
A musicians union is an organization formed by and for musicians to promote and protect their interests in terms of compensation, work conditions, and other related issues.
Step-by-step explanation:
A musicians union is an organization formed by and for musicians to promote and protect their interests in terms of compensation, work conditions, and other related issues. It functions as a collective bargaining unit that negotiates with employers on behalf of its members.
The union works to ensure fair treatment, wages, benefits, and working conditions for musicians in the industry. It also helps to facilitate professional networking, provide legal aid, and advocate for the rights of musicians.