By shopping through the iTunes Store app on iOS 8, you can download music to your iPhone without a computer. Even if you usually on a PC or Mac, the phone itself is all you need to buy new songs or download old purchases.
Open the iTunes Store app on your iPhone to browse the store. On the Music page, check out the Featured or Charts tabs for current top hits and sales. Tap Genres to see the featured songs and charts for a particular genre.
If you're looking for something in particular, open the Search page and type a song, album or artist name.
Tap a song's name on the details page to listen to a sample clip. There's no limit to how many songs you can try out, but each only plays a short selection from the full piece. When you find what you're looking for, tap the album or song price, and then tap Buy Album or Buy Song.
Tap Purchased and choose Music to download music you already own. Open the Not on This iPhone tab to narrow the list, and pick the artist you want to download.
Tap Download All to download all the music from an artist, or tap the cloud icon by an album or song to download individual items. ITunes won't charge you for music you've already paid for, as long as you use the same Apple ID. Downloading music with a cloud icon incurs no charges.
As soon as you buy a song or album, your iPhone automatically begins the download. When it finishes, use the Music app to listen. To see download progress, select More and tap Downloads.