Reynolds' Imagine Dragons took Halsey out on tour with them at the beginning of her career and now her man has collaborated with the new dad on the track "Original Me".
The two musicians, who also co-wrote the track, will debut the song live on America's "The Late Show With Stephen Colbert" later this month (October 2019).
"This song is about accepting the parts of yourself that you hate and realising your biggest superpower is to be originally, authentically yourself," YUNGBLUD said in a statement. "Working with Dan Reynolds was such a dream come true as he is a huge inspiration for me. The song literally came out of the studio within a day. The mutual raw energy between us made this song what it is."