Sudden data surge by Music app

I got a notification from my service provider that I had used up 75% of my 4GB allowance just a few days into the month. I looked up my usage, and it looks like the Music app somehow used up 2.8GB in one day (see attached - iOS usage shows 2.8GB used by music, TELUS app shows it all happened in one day). I hadn’t used the music app at all that day, and was only away from wifi for about 2 hours total that day. Any idea what my phone could have possibly been doing to pull in that much data so quickly? I’m not thrilled about having to pay $32 for a data top up to make it through the month because of this one bug or whatever it was.