The Rambler, Tim Rutherford-Johnson, has investigated a recent Proms score by Mark-Anthony Turnage, discovering that it is, in part, an amped-up transcription of a recent pop hit (here and, most astonishly, here). Between this and the 800% slowed down Justin Bieber tune, noted on this page a few days ago, one starts to wonder if we are moving into a new era in which art music parodies of popular material become a central genre. While I'm certain that there are some intellectual property thickets to cross through here, if this phenomenon establishes itself, it would seems to be placing the relationship between commercial and art music production back onto a more comfortable plain, and a plain long familiar to composers. Just think of all those masses built around the Renaissance pop song L'Homme Armé, many of them stretching the melody or hiding it in a dense texture beyond immediate recognition, or the complexes of remembered tunes and landscape in Ives (and, to some extent, Mahler). I've long subscribed to the notion that composers compose out of their acoustical environments, and such popular musical material is often — and unavoidably — as much a part of the environment as the bird songs, stormy weather, or traffic noises that can appear in musical works.