John Gilliland Pop Chronicles Collection

An audio collection of interviews Gilliland made with numerous famous rock, jazz, and popular musicians from 1955-1991: 

https://findingaids.library.unt.edu/?p=collections/findingaid&id=959

Omega Productions Collection, 1974-2003
Recordings (tapes and other formats) chronicling live performances of rock and other popular genres, mainly in Texas but also in a few other locales:

https://findingaids.library.unt.edu/?p=collections/findingaid&id=1018&q=&rootcontentid=257792