What's a good music downloading site or app for an iphone?

What's a good music downloading site or app for an iphone?

Use the app sound cloud and make a playlist

I buy all my music, I've spent over 1,000$ on iTunes and the App Store! But sometimes I can't find a song on iTunes so I have to do something else.

I love GrooveShark, it's a website that's a lot like an app, you can stream tons of songs and it works in the background, you can make playlists, etc. That's GrooveShark.com

For downloading music (from YouTube) I like Pocket Tube because it looks just like the Apple music player, and it works in the background. Plus you can watch the YouTube videos or just have the Album Art, your choice. Plus it works really good. (https://itunes.apple.com/us/app/pocket-tube-listen-million/id607616179?mt=8)

I don't recommend Sound Cloud because it doesn't really have a huge selection for bigger bands and artists. It's mostly indie music, and remixes. I tried.