Written by Nelly, Dorian Moore and Tegemold Newton and produced by Doe Mo' Beats, "Tilt Ya Head Back" is a hip hop and pop number that features a sample of Curtis Mayfield's "Superfly".

"Tilt Ya Head Back" was written by Nelly, Dorian Moore, Tegemold Newton, Curtis Mayfield and produced by Doe Mo' Beats.

[1] Joe Muggs from The Daily Telegraph noted that the duo's vocals are similar to "old-school soul voices of Ron Isley and Anthony Hamilton.

[11] Reporting the ceremony, James Montgomery wrote, "As she warmed up her pipes, the power of her vocal exercises caused people standing outside her dressing room to jump.

[14] During the making of the clip, Nelly gifted Aguilera US$55,000 worth jewels as a parting present, resulting in a rumor that the duo were romantically involved.

[14] "Tilt Ya Head Back" impacted on US contemporary hit radio stations in September 2004 by Universal Music as the second single from Sweat.

"[20] David Browne of Entertainment Weekly praised the duo's vocal on the song,[21] while Rolling Stone editor Rob Sheffield named it "a completely pop duet.

"[9] On a less positive review, The Daily Telegraph's Joe Muggs complimented Aguilera's "undeniably impressive voice", however he thought that the duo's vocal performance did not match each other.