Mental health and meditation app Calm and Universal Music Group have teamed up for a new ‘Sleep Remix Series’.The release, which arrives on World Sleep Day this Friday (March 19), features specially created remixes of huge pop songs from Universal artists, designed to help listeners fall to sleep.The remixes, which last 60 minutes each and are specially composed to assist sleeping, are based on tracks from Ariana Grande, Kacey Musgraves, Katy Perry, Post Malone and more.See the full tracklisting