Lower quality streams obviously use way less data. So what does that mean in terms of your data plan? 320kbps rate translates to 2.40 MB per minute of audio or 115.2 MB per hour. So if you were to stream music for an entire eight hour work day, you’d burn through nearly 1 GB.
https://gizmodo.com/how-much-data-does-your-streaming-music-app-eat-up-1649466894
How Much Cellular Data Does Music Streaming Use ?