HAIM, the trio of LA sisters that just opened arenas for Mumford & Sons, translate the If it gets rough/ It's time to get rough refrain of "Falling" enviably, spending a day cracking coconuts and hand-catching fish in a palm tree forrest. The track, produced by Justin Bieber/Usher/Snoop Lion collaborator Ariel Rechtshaid, launches the girls' voices across a canyon of bass noodling and gospel claps, culminating in a full-bodied swirl of bonfire drums. The band's set to play big festivals in the US and Europe this summer; they'll stop over at SXSW in March.