. >> then l.j. and alex found oliver.s even younger than they were. >> i had just played my school's talent show, and i put up a video -- or my dad put up a video of me playing it, and alex and l.j. saw the video, and then they called me up. and then one day after school, we just played together. >> all three of them write songs. they chose the name going dark because their songs shine a light on serious issues. >> you know, lots of people think that we write only about dark things, but there's always hope in the world... and in our songs. >> so, listen more closely, and you'll discover this song, "stand up," is about standing up to bullies. >> ♪ stand up for yourself ♪ stand up for what you believe in ♪ ♪ don't start what you can't finish ♪ ♪ if you think you're a tough guy, you better keep dreaming ♪ >> the music video makes the point even more dramatically. oliver says he wrote it after he was picked on at school. >> ♪ the only thing you have is that you're a disgrace ♪ ♪ stand up for yourself ♪ stand up for what you b