Apple Watch: Apple Music & Bluetooth Headphones
To listen to music directly from your Apple Watch using Apple Music and Bluetooth headphones:
Open the Apple Music app on your Apple Watch.
Press and hold the display (or tap the three-dot menu, depending on your watchOS version).
Select Source.
Choose Apple Watch as the music source.
Select a playlist or album and tap Play to begin listening.
Make sure your Bluetooth headphones are connected to the watch beforehand to hear the music directly from your watch.
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