Bobby Brown’s Song for Whitney

An emotional Brown — sporting sunglasses and leather pants — performed a new song about Whitney Houston on “The Tonight Show with Jay Leno” … featuring the lyrics, “I didn’t realize that every breath I took was from you … You were my air.”

Brown also sings,”I guess I messed up pretty bad … I didn’t know who you were … I didn’t know what we had. Now I’m stuck living in the past … trying to get the pieces back … but I guess now you’re gone.”

Brown is releasing the song on his new album, which drops in June … just 4 months after Whitney died.