Gaana.com is the Best site for online music streaming. I used this app since 1/2 yrs, my opinion is great, you can listening music 2g/3g/4g any connection.
Available quality is low, high, medium,
The user interface is good you can easily search music what you want to listen and the music quality depend on the mode what you select, but all the mode is good no issue of sound. Hollywood, Bollywood, Tamil, Bangla, etc
All type of songs are available.
This app available on playstore free.
Download get the app and listen music easily.
Thank you