Hi joelsmith24,
Thank you for participating in the Apple Support Communities. Here are a few steps to try first:
Restart your iPhone.
Test if the same thing happens when streaming a song.
Test using a strong Wi-Fi connection and then with a cellular connection.
Disable and then re-enable Sync Library.
Sign out and back in with your Apple ID which will remove offline content.
Remove affected content and download again.
Test high quality and Lossless (Settings > Music > Audio Quality).
Test with Dolby Atmos disabled (if in use).
Test if this occurs with the built-in speakers, with wired headphones and/or wireless (AirPods or Beats).
If the issue persist, Contact - Official Apple Support
Have a great day.