Burning Q's: Ashley's Pipes & Alicia's Noggin

Why did Ashley Tisdale cover Rick Astley's classic song "Never Gonna Give You Up"? Ashley's version is terrible, and I can't think of a possible reason for her to cover it.
—Jeremy, OregonThe song was one of four covers recorded as part of an exclusive deal to shill Degree deodorant. You really don't think she'd bark out that tired Rickrolling anthem unless there was money behind it, did you? Onward, with more of your Burning Q's! (link)