Up-and-coming duo Mayfly has released an entrancing new single called "when all we knew was us."

The duo made up of singer-songwriters Charlie and Emma, who are based in Montreal, have been busy working on new music, both in French and in English. This new song comes ahead of their debut ESSENCE EP, which is out June 17 via Canadian label Duprince.

“It brings you back to this state of being completely vulnerable towards someone else,” says the duo. “Lyrically and instrumentally, we tried to create a soft, reminiscent sound that would bring back feelings of nostalgia to our listeners."

Hear the new song below.