Timberlake described "Sexy Back" as "an experiment gone right from the sort of synthesizer influence to the distorted vocals", adding that it was "one of the songs that the more you listen to it its just hook after hook after hook.
Discussing "Sexy Back", Timberlake revealed that he went "left", singing the song in a rock style, not an R&B style. The instrumentation used in the song includes a pounding bass beat, electronic chords, and drum machine sounds.
"This is such a departure from the first record," said Timberlake.
"More people might like it, less people might like it, but you can't call me a chicken." "Sexy Back" was commercially successful in the United States.
That's the approach." He was "keen for a new musical direction" following the release of his first album, Justified. Everything's [sic] got so repetitive, everything sounds the same. 'Sex Machine' is the closest reference." In addition, he admitted that the song was not going to be titled "Sexy Back", saying, "We weren't originally going to call it 'Sexy Back'.
"I listened to the radio for a few months and thought, 'All this sounds like shit, what do I want to hear? I had to create something unique otherwise there's no point putting it out." "Justin [Timberlake] goes in the chorus 'Go head be gone with it', I called the song 'Be Gone With It', just to label it. I definitely didn't think it would become the most worn-out phrase of 2006.