Tilt Ya Head Back

The line between hip-hop and pop has long been blurred, so it comes as no surprise that Nelly and Christina Aguilera partnered for "Tilt Ya Head Back," which the pair debuted during the recent MTV Video Music Awards. Curtis Mayfield's classic "Superfly" provides the perfect backdrop for this sizzling duo to get its groove on. The sultry and wickedly dancefloor-friendly jam is the latest single culled from one of Nelly's new albums, "Sweat." While the rapper has toned down his image during the past few years, Aguilera has worked extra hard to shake her good-girl facade. This middle ground seems to work for both of them, especially since it virtually guarantees a hit among listeners across the musical spectrum. Although it is cooling down outside, "Tilt Ya Head Back" will surely keep radio airwaves and dancefloors burning up for months to come.—KK