It was the second Earthworks album to feature saxophonist Patrick Clahar, pianist Steve Hamilton and acoustic bassist Mark Hodgson.

Unlike previous Earthworks albums, it showcases a more traditional acoustic jazz quartet sound.

In a review for AllMusic, John Duffy wrote: " Precisely what made the early Earthworks records so interesting were the chordal drums, largely horn-driven songs, and more progressive outlook.

"[1] Writing for Jazz Times, Steve Smith stated: "With each of his successive side projects, [Bruford]'s edged closer to the trappings of mainstream jazz, stripping away the electronics and gimmicks until finally, on The Sound of Surprise, what's left is the very foundation of the tradition: a saxophone, a piano, a bass and a drum kit."

"[3] David Cisco of Progressive World called the album "a treasure of complex musical arrangements and exciting musicianship," and commented: "The Sound of Surprise showcases the master timekeeper's vision and songwriting and production skills while sharing the spotlight with his highly talented bandmates.