Written by Michael Fennelly and Joey Stec, the song was produced by band leader Curt Boettcher and Keith Olsen.

A veiled protest song, "It's You" features lyrics inspired by government censorship and contemporary conspiracy theories.

This performance presaged the eventual reception of the song's parent album the following month, which received positive reviews but again did not chart in either territory.

[3] In a retrospective review of Begin in AllMusic, writer Matthew Greenwald described "It's You" to be "as powerful and fully realized as the era ever produced, easily on par with songs by the Beach Boys and the Byrds -- and, yes, even the Beatles.

"[4] In a review of the band's compilation album Pieces, Dominique Leone described "It's You" as an underrated song compared to other music released in 1968, praising its "pristine harmony vocals", and comparing it to songs by the Beatles, specifically noting its bassline as similar to "Baby, You're a Rich Man.