Hello, bright_bear0.
Thank you for contributing to Apple Support Communities.
We understand that you’re hearing different songs when you play a song using your Cellular Data connection than you hear when you play it on a Wi-Fi connection, and you’re curious about ways to resolve the issue.
With a quick search of the Apple Music library, we can see that Dumb by BVNDIT is available in Lossless. Let's start there.
Check your Music app settings to see what you have selected for Audio Quality. It may help us find the cause of your issue.
Go to Settings > Music > Audio Quality and check to see if you have Lossless Audio enabled. If you do, what do you have selected for Cellular Streaming and Wi-Fi Streaming? If the selections are different, try to temporarily align them and restart your iPhone. Do you hear the same song when you stream it verses listen on Wi-FI now? If you do, and the difference in the two versions is only that the audio sounds different, it may be the difference in audio qualities that you’re hearing. If the difference is two totally different songs, reach out to Apple to report an issue with the song:
Feedback - Apple Music - Apple
Is Lossless not the issue? The only other possible explanation we can think of is that you may be connecting to a computer with a downloaded iTunes/Music library through home sharing on your home Wi-Fi. In this scenario, when you’re connected to Cellular Data it will play the version of the song in the Apple Music library, but when you’re connected to the same Wi-Fi network as the computer that houses your downloaded music library, it will play the version that is downloaded on that device. This article explains:
Use Home Sharing to share media from a computer to other devices - Apple Support
We look forward to learning more about your findings.
Cheers.