Chains, independents, online, mail order, etc. Examples include Musicland, Tower, Amazon and J&R.
To include both major and independent. Examples include Columbia, RCA, Capitol, Jac Holzman, and Berry Gordy.
Broadcast, publications, social. Examples include Nielsen and MTV.
Technology, new ideas. An example includes Apple.
Examples include Irving Azoff, Brian Epstein, and Colonel Parker
Examples include Sir George Martin, Butch Vig, Rick Rubin, Quincy Jones, and Dr. Dre.
Recording studios, buildings, venues. Examples include the Brill Building, Abbey Road, Sun Studios, Ryman Auditorium, Red Rock Amphitheatre, Greek Theatre, and CBGBs.
Industry trades and misc. An example would include Mickey Granberg.
