Will the new iMusic service require the use of wifi, LTE, or 3G?

To stream live data from the Internet, one must use "Data" which we must pay for each month per our wifi data packages. The Apple Music Offer is a streaming program which will be using up my data, if I am using 3G or if I am playing the music in a location without wifi, leaving me dependent on my own device & data.
Please confirm.

Yes, it will use your data if not on Wi-Fi.