U2 drummer Larry Mullen Jr. has joined forces with viral singer GAYLE on ‘Between The Lines’.

The song was crafted specifically for an upcoming documentary on dyslexia titled Left Behind, which details the battle to open the first-ever public school for children with dyslexia in New York.

“I have been pretty public about the fact that I have dyslexia, and that is something that has been a part of my whole entire life," GAYLE told Billboard.  "Larry reached out to me about trying to collaborate for this documentary. He was talking about how passionate he was about the project, especially the fact that he has a child that has been affected with dyslexia. He had a view as a parent seeing how it’s affected his child. He didn’t have to sell me in any way.”

“I was really anxious that when I agreed to do [the song] that somebody who actually had dyslexia was involved and they would do the lyrics," added Mullen. "It was just completely fortuitous and luck that myself and GAYLE kind of fell into each other.”

Left Behind was directed by Anna Toomey and premiered at the Woodstock Film Festival in October.

• • Listen to 'Between The Lines' below: