Sam Dunn: It seems as though Layne Staley, Eddie Vedder kind of set in motion a new style of male rock-vocal, I mean, would you agree with that?
Jack Endino: I call it Yarling.
Dunn: "The Yarling?"
Endino: We call it (nasally) yarli-wo-aaal! Thaaat's yarlingScene Transition
Mark Arm: Before I heard the term "Yarl," my friends and I called it "under-bite rock"; it sounds like the singer is going (droning heavily) "Aaaahhh" with an under-bite.Scene Transition
Dale Crover: (low baritone) Heeey-yuh!
Buzz Osbourne: (low baritone) Yeeeah-uh! Yeah-uh! (Speaking normally) We gotta try that.
Cover: (starts mimicking a fog horn)
Osbourne: (also mimics a fog horn)Scene Transition
Michael Azerrad: Eddie Vedder concocted that way of singing because it was his original way of expressing himself. It came from a really real place, but then it kind of got codified, and made into a formula that didn't even mean anything. It was just sort of like "you have to sing like that, because that signifies alt-rock soulfullness." And it just kind of got repeated mindlessly.
-Interviews, Metal Evolution episode 7, "Grunge".