Both Google on the YouTube Music account, and Pandora, have made the announcement on Twitter. The Clock application on Android can now wake you up by playing tunes from YouTube Music or Pandora as alarm tones.
You need to make sure your Clock application is up to date. Once you have the latest version, head over to the Alarm section, and choose your preferred streaming service.
⏰ Go ‘head and ring the alarm! ⏰ Now YouTube Music Premium works with the Clock app from @Google. Wake up *or snooze* to your favorite tracks every morning → https://t.co/kzr47LKTRy pic.twitter.com/Xv0gFsq7PQ
— YouTube Music (@youtubemusic) February 28, 2019
— Pandora (@pandoramusic) March 1, 2019