I first started listening to mashups in 2017. Late start, I suppose. Now two years later (Jun 21, 2019). My workout playlist has been "fixed" for the past two years. But when I told a friend that my playlist is pretty much exclusively rock n hip hop mash ups, he said "Gimme your phone." One YouTube search later, and "All Day" has been playing in my car and in my home pretty much nonstop. Pure genius at work here imho.