hope you're dancing in the sky ♪ ♪ and i hope you're singing in the angels choir ♪ >> that is elizabeth nelsonf danny and lizzy. she and her twin sister have a music group, and this song went crazy viral, more than $5 billion views, and people who lost loved ones, lost friends, they kept sharing this song and over because it was a song about losing someone special. we also found out that they have a brand new song and video on youtube called "my life." ♪ party the night away ♪ like a bottle rocket ♪ hey hey hey >> this song fun, traveling, doing all kinds of cool stuff together, and it's a song and video to promote their album that's about to come out called "work of heart," and these guys are amazing. we talked to danny and lizzy. this song "dancing in the sky" is remarkle. tell us more about that song. >> unfortunately, i lost a couple friends, so i was grieving at the time, and one of the ways that i channel my emotions is to write music, so i ended up writing the song "dancing in the sky," and, for me, i heard a lot of songs that are kind of, like, really sad about death, so i wanted to do

. ♪ what does it look like in heaven ♪ ♪ is it peaceful ♪ is it free >> this is elizabeth nelson, parting duo called danny and lizzy. they have a popular youtube channel and this video posted a year ago already has more than 5 million views. the song's call "dancing in the sky," a song about heaven. ♪ oh i hope you're dancing ♪ in the sky ♪ and i hope you're singing ♪ in the angels choir >> she wrote the song because she lost a lot of friends, people who were special to her, and she did this to soothe her own soul and also to offer words of comfort to others. it's been shared thousands of times, and they have a new music video that they just released. danny and lizzy singing "my life." ♪ i can't believe this is my life ♪ >> this song is upbeat, a song of gratitude, thanking their fans and the people online who made them popular because now they are about to release an album called "work of heart" and this is their way of saying thank you, but, really, the video "dancing in the sky" that got their name out there. >>> some people caught a fly, but as soon as they caught it, something ver