I’m now as of today on my second Apple 3 series watch and I’m having the same issue I had last week. Music pauses abruptly ONLY when playing from watch plays continuously and just fine through phone play list. This is beyond frustrating!!!
I have both watched now for a combined 13 days and samething. I’m very upset being that my soul purpose for getting the watch was so that I could have cellular service and enjoy my music during a workout or casual time at my work place. I’m a maritime worker so the watch is ideal for my line of work. I’m unable to rep its benefits because of this issue PLEASE CORRECT APPLE!