The music industry is made up of various players, including individuals, companies, unions, not-for-profit associations, rights collectives, and other bodies. Professional musicians, including band leaders, rhythm section members, musical ensembles, vocalists, conductors, composers/arrangers, and sound engineers create sound recordings of music or perform live in venues ranging from small clubs to stadiums. Occasionally professional musicians negotiate their wages, contractual conditions, and other conditions of work through Musicians' Unions or other guilds. Composers and songwriters write the music and lyrics to songs and other musical works, which are sold in print form as sheet music or scores by music publishers. Composers and performers get part of their income from writers' copyright collectives and performance rights organisation such as the ASCAP and BMI.
These societies and collectives ensure that composers and performers are compensated when their works are used on the radio or TV or in films. When musicians and singers make a CD or DVD, the creative process is often coordinated by a record producer, whose role in the recording may range from suggesting songs and backing musicians to having a direct hands-on role in the studio, coaching singers, giving advice to session musicians on playing styles, and working with the senior sound engineer to shape the recorded sound through effects and mixing.
Some professional musicians, bands, and singers are signed with record labels, which are companies that finance the recording process in return for part or full share of the rights to the recording. Record label companies manage brands and trademarks in the course of marketing the recordings, and they can also oversee the production of videos for broadcast or retail sale. Labels may comprise a record group — one or more label companies, plus ancillary businesses such as manufacturers and distributors. A record group may be, in turn, part of a music group which includes music publishers. Publishers represent the rights in the compositions — the music as written, rather than as recorded — and are traditionally separate entities from the record label companies. The publisher of the composition for each recording may or may not be part of the record label's music group; many publishers are wholly independent and are owned by the artists themselves.

Record labels that are not part of or under the control of the "Big Four" music groups are generally considered to be independent or "indie" labels, even if they are part of large, well-financed corporations with complex structures. Some music critics prefer to use the term indie label to refer to only those independent labels that adhere to criteria of corporate structure and size, and some consider an indie label to be almost any label that releases non-mainstream music, regardless of its corporate structure.