Universal Music and Apple Music teamed up for a sleep and relaxation initiative that takes familiar songs and blends them with "special sound waves."

Macworld May 15 is Global Accessibility Awareness Day, and Apple always uses the occasion to highlight some of the new accessibility features coming to iPhones and Macs. This year, Apple’s got another announcement to share: three new Sound Therapy playlists on Apple Music available now.

Apple Music teams up with Universal Music Group to introduce Sound Therapy, an audio wellness collection to help listeners relax, focus, or sleep. Available exclusively on Apple Music, Sound Therapy is designed to blend songs subscribers already know and love with special sound waves made to enhance users’ daily routines,