Hi, both me and my girlfriend bought Samsung watches . We both have Spotify premium. When I use Spotify on my watch the music comes out of the watch. When she plays it, it comes out of her phone and we can't figure out how to make it come out of her watch.
go onto your drop menu on the phone and to Bluetooth where there should be a option to expand. if not click on it.. there you can choose which device the music plays on
try with some bluetooth ear buds into here watch and see if that work or un pair it from her phone and restart the watch and repair by bluetooth and the app for it witch is samsung wearable app