Find the app that is simply named "Music", it has a speaker with a music note/symbol as an icon. Open the app and press on the lines at the bottom left corner. Now, you will see all the music that is on your SD card sorted by artist. To sort by song press the music note (fourth icon from left). Scroll through the songs and find one that you want to delete. Press and hold on the song title until a little box pops up on the screen. The title of the box shoudl be the title of the song you want to delete. If it is the wrong song, simply press the back button and select a different song. If it is the correct song then press the word delete. You will then get a confirmation notice, when you press yes the song will be deleted.