Eight years after crushing dance charts with the 2013 Borgeous collab “Tsunami,” LA/Toronto brotherly duo DVBBS finally offer up a highly anticipated debut full-length. But their style has progressed considerably over the previous decade (they first showed up with 2012’s Initio EP), and Sleep shows all the contours of that evolution. Fittingly, as Christopher and Alexandre Van den Hoef's status has grown, so has their Rolodex, and Sleep packs a lot of guest vocalists, almost all of whom round off the edges of their sound. Fellow Canadian Powfu’s turn on the opener, “Losing Sleep,” makes for a laidback dance-pop entryway into these 15 wildly varied tracks. Norwegian vocalist Alida and Israeli producer GATTÜSO guide “Leave the World Behind” toward gentle dance-floor euphoria. Not surprisingly, Icona Pop brings some clubby heat and bounce to “Do It Anyway.” And YBN Nahmir adds some lascivious verses on the danceable hip-hop track “Victory.” DVBBS haven’t, of course, forgotten their roots: Tracks such as “Zombies,” “Oy” (featuring Seysey), and “State of Mushroom” show that their dark, chugging dance-floor grooves are still foundational to everything they do.