Mostly Clear  Jay-Z, Justin Timberlake cross over together in
tour  NEW YORK - The partnership between Jay-Z and Justin
Timberlake may seem a bit strange.  Jay, after all, has ruled
hip-hop for years, while Timberlake, even at his edgiest, has
rarely ventured beyond the poppier side of R&B. Timberlake's
2006 duet with Jay-Z's wife, Beyoncé, "Until the End of Time,"
was far more expected.  However, when Timberlake made his
surprise return to music in January, after years of focusing on
acting, it was with Jay-Z by his side for "Suit & Tie." And they
quickly solidified their relationship by announcing a stadium
tour, which kicked off Wednesday in Toronto and runs through
Aug. 16 in Miami, stopping in San Francisco on July 26 at
Candlestick Park.  So why did these two hook up? Was it for
artistic reasons? Perhaps. Was it the influence of Timbaland,
who worked with Timberlake on "The 20/20 Experience" and Jay-Z
on his new album, "Magna Carta Holy Grail"? Maybe.  Most likely,
it was a combination of those reasons