What’s This Playlist All About? Smooth pop crooners Lauv and Troye Sivan have just released their first collaboration with the breezy, love-song-lamenting “i’m so tired...” To go along with it, the duo has also compiled this somnolent list of their “favorite sleep songs.”What You Get: After the twosome’s own sweet (but not-so-sleepy) groove, comes Aphex Twin’s lovely, twinkling “Avril 14th.” Following are airy, fragile mood pieces from singer-songwriters like Bon Iver, Lucy Rose, and SOAK, plus a few melancholic ‘90s reveries from Portishead and Mazzy Star. They also seem especially fond of the warm ambient melodies of Geotic, featured here four times. Our only criticisms: the Ella Fitzgerald pick seems a little too fierce for bedtime, and they’ve seemed to miss one obvious selection—The Beatles’ “I’m So Tired.”Greatest Discovery: The lush keyboard musings of electro producer Christian Loffler, whose way-too-short “Alpine Sketch” closes out the mix and makes us crave more of its dreaminess.Is This an Appropriate Mix for Insomniacs? It’s a pretty great chill mix, but drowsy as its flow and beats may be, the songs are just too good to want to zonk out to.