When you use the amazon cloud on you iphone does that use data?

Okay so for Christmas I got an iphone 4s and I have music on the amazon cloud that I want to listen to on my iphone. I have to be careful with how much data I use (especially since my brother can go a bit overboard) So I was just wondering whether just listening to the music on the amazon cloud uses data or not.

Amazon Cloud Player plays media from the internet, not from media stored on your phone.therefore, it does use data. The average song in MP3 could be around 4 MB.