Https://blog.youtube/news-and-events/youtube-music-now-available-apple-watch/ "People can browse music collections, control playback and select casting options directly from their Apple Watch. ... Whether you’re out for a run, riding your bike or just walking around the house — YouTube Music for Apple Watch puts playback controls within easy reach. ". Source: about 2 years ago

I couldn't find anything in their help or support pages (aside from forum posts requesting the feature) and it's not mentioned on the one blog post they made announcing the app. Source: over 2 years ago

Soundcloud doesn't have an Apple Watch app. Seems YouTube Music's app is just a controller for the phone app. Source: over 2 years ago

It was nothing new, Google had already confirmed this during the launch of the YTM for Apple Watch, but it is good to see on a stage. Source: about 3 years ago

I'll also use spotalike.com, and tunebat.com. Source: about 1 year ago

Spotilike: basically the same thing as is built into the Spotify desktop app. Source: about 1 year ago

-Expand your music taste, put stuff into spotalike and find new songs. Source: over 1 year ago

Https://spotalike.com/ paste in a song. And it will give similiar results. Source: over 1 year ago

Https://spotalike.com - create Spotify playlists based on your favorite songs. Source: almost 2 years ago