The structure smells very much like the YouTube deal major labels made when they’d had enough of PROs not negotiating high enough license rates for them.
Which, as an ex-PRO employee, makes me a bit sad to see.
“Performing Rights Organization” - so in the USA, ASCAP, BMI, SESAC. They offer what’s known as “collective licensing” for music rights - essentially an aggregation of a bunch of copyright owners, so that someone who wants to use music can negotiate with the PRO and get access to all its members rights rather than having to go and negotiate with thousands of individual music publishers, songwriters, etc.