Steps to follow to download music to iPhone:
How to Download Music to iPhone
Step 1. Download iTunes in your PC from the official Apple website.
Step 2. Plug in your iPhone to your computer via USB.
Step 3. This will automatically open iTunes on your system, if not then open it.
Step 4. Now you first need to add songs to iTunes library, click on the ‘Songs’ option in the left list available, and now drag the songs already available on your PC on to the right side of the iTunes window.
Step 5. Now for music download from iPhone click on the Phone icon in your iTunes, scroll down and check the box in front of ‘Manually manage songs and videos’.
Step 6. Open the songs in the iTunes library that you selected to be transported to your iPhone device.
Step 7. Select all the songs and now drag and drop to the left side window into ‘My Device’.
Step 8. You can now check your iPhone Music to see the new songs added to it.
Step 9. You can also get music from iPhone by using Music Apps like Wynk, Spotify, SoundCloud etc. Most of them are online music streaming apps, but few of them also allow you to download music on your iPhone.