[2] "Simply Amazing" was written by Trey Songz, Najja McDowell, Troy Taylor and Christopher 'C4' Umana, with the latter two also serving as the producers of the song.

Taj Rani of Billboard claimed that "Simply Amazing" is a result of an experiment where Shania Twain and the Backstreet Boys birthed a mainstream ballad," also noting that "Trey's seductive vocals bring a warm welcome into the pop realm.

"[10] Nathan S. of DJ Booth agreed, claiming that it "goes for that crossover appeal with an acoustic guitar-driven cut that Songz does his damnedest to make the kind of song just as likely to get played on VH1 as BET.

"[11] While Richard, also of DJ Booth, praised its producers for "provid[ing] an appropriately sweeping backdrop for the artist’s heartfelt vocals.

"[15] Robert Copsey, of the same publication, wrote a separate review of the song, analyzing that "it's not his strongest offering as he sings smitten about losing himself under the covers with his freshest catch over an all-too-familiar finger-snapping R&B beat," also noting that "it lacks the bite of recent cuts 'Bottoms Up' or 'Heart Attack'.

[18] In the United Kingdom, "Simply Amazing" became Songz' first top ten hit, entering the UK Singles Chart at number 8.