The steps to completely delete the music on the iPhone 6 are as follows:

1. Open the phone and click on the music player; (here we take this player as an example)

2. Enter the music player, click to select "My" as shown below;

3. Enter the "My" page, you can see the local music options, click to enter;

4. Click on the option behind the song, as shown in the picture;

5. Click to select and delete;

6. Click to complete the deletion, and the page is as shown in the picture below , the music downloaded to the mobile phone will be completely deleted.