Sia's new song is huge. Radios, like her other hits, will no doubt get sick of playing it thanks to immediate chart climbing and fervent play. And for good reason. Blame the playful bounce and contagious pop melody.

Music fans have been waiting for the CDQ version of 'Wolves' since the collaborative track between Sia, Kanye West and Vic Mensa was premiered during Kanye's Yeezy Boost unveil back in February of last year. We're still waiting. But in the meantime, we've been gifted with a new Sia and Kanye collaboration, as the wigged-singer unveiled her new upbeat single 'Reaper,' off her upcoming album This Is Acting, with co-writing and co-producing credits belonging to Kanye.

Sia's forthcoming album, This Is Acting arrives January 29 and features the previously-delivered songs 'Alive,' 'Bird Set Free,' and 'Cheap Thrills.'