Comments from an Espn story:



All you need to know about the essential and elusive nature of chemistry can be found in this clip of Paul McCartney and Jay-Z performing together at the 2006 Grammy Awards.

The performance starts off with Jay-Z and Linkin Park doing a mashup of their respective songs "Encore" and "Numb." That works pretty well. Then the music shifts to the Beatles classic "Yesterday," and when McCartney steps on stage at the 2:42 mark, everything gets as awkward as a blind date. Jay-Z seems like he desperately wants to impress McCartney. (He even wore a John Lennon T-shirt for the occasion.) But the rapper doesn't have the singing voice to lay down some harmony, so all he can do is say things like "Uh-huh, uh-huh" and "Yes, yes." Then he conducts an imaginary orchestra. McCartney spends most of his time ignoring him, but does shoot an occasional glance, trying to figure out what to make of Jay-Z while taking great pains not to offend him. Pairing icons of rap and rock seemed like a good idea at first. It failed because the chemistry didn't work.

I'd love for them to revamp
Paul's Christmas song
"Simply Having A Wonderful Christmas Time"

just the kind of quirky beat
Jay woulda kilt back in, say... '98