it's important to us that all your features from the phone work properly, and I would be happy to help. let's collect a few additional details.
Just for clarification, does the phone have the most recent software applied? Have you added any new apps to the phone recently? Also, please run a diagnostic on the phone at your earliest convenience View Device Health Check - MVD - Android | Verizon Wireless
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You might also do a quick check in settings to see which apps are given priority during a call or using Bluetooth. You don't specify if it only happens when calls are needed, with or without music,using Bluetooth. I hope this helps.