If Nickelback's Chad Kroeger is impressed this much by Avril Lavigne, how much must he suck? Trick question. The answer is "a lot."

Via Contact Music:

Chad Kroeger says working with fiancee Avril Lavigne is "like taking a bazooka to a knife fight!" The Nickelback singer worked with the 'What The Hell' singer on tracks for her fifth album - a relationship that proved so fruitful it has led to them becoming engaged - and was blown away by her vocal ability from the start.

He exclusively told BANG Showbiz: "It's easier to write for somebody who has got a vocal range like she's got. It's ridiculous how high she can go. She just opens up her throat and it goes higher and higher - and it's amazing, it's like taking a bazooka to a knife fight!"