While navigating with CoPilot you can easily control your music as follows:
Swipe up from the lower left or right hand corner of the screen, then swipe Left to access the music controls - if they have still not come up
For iPhone 6S and newer devices that have "always listen for Hey Siri" enabled, or for older iOS devices, users can summon Siri while plugged into power. (Go to iPhone Settings > Siri > Allow "Hey Siri').
Users can start, stop, pause, skip tracks totally hands-free.
Swipe down from the top of the screen to open music controls