Keep your favourite tracks together in a playlist
In the Music Player app, with any song selected, tap and hold it and select ‘Add to playlist’.
Now choose ‘Create playlist’ in the resultant screen and you will be prompted to give it a name. The song will be added to the newly created playlist, at which point you can add as many tracks to it as you like by ticking the boxes next to them. When viewing playlists, you can tap and hold songs to delete them. To rearrange the songs you will need to open the playlist and then move each track. Try to keep your playlists small for the quickest navigation experience and, if possible, try to limit the number you create.