At 960 frames per second, its camera can be used to make epic videos by adding music and effects to them. (flipkart.com)
You can also add music by tapping on the center icon and then select the music you want from your playlist or from the included «Theme Music». (factschronicle.com)
If these files are not there, then add music files to the music folder and if files are available, then check whether they are in MP3 format. (thedevicesupport.com)