"Tilt Ya Head Back'" is a 2004 hip hop/R&B/funk song by American rapper Nelly. The song also featured American singer Christina Aguilera. Christina Aguilera's singing role was originally meant for Britney Spears but her record label, Jive Records wouldn't allow her to because they thought the song was "too urban" even though Britney wanted to do the song anyways. It was the second single from his third studio album Sweat. The song was released on September 15, 2004. The song reached #4 on the New Zealand RIANZ Charts Singles Chart, #5 on the UK Singles Chart and #5 on the Australian ARIA Charts Singles Chart.