Noun
rockumentary (plural rockumentaries)
A documentary about rock music or its musicians.
Crystal appeared briefly in the Rob Reiner " rockumentary " This Is Spinal Tap (1984) as Morty The Mime, a waiter dressed as a mime at one of Spinal Tap's parties. Source: Internet
In 2014, Morricone's song "Giù La Testa" featured in Florian Habicht 's feature film Pulp: a Film about Life, Death & Supermarkets, an unconventional rockumentary about British group Pulp which premiered at SXSW that year. Source: Internet