It was produced, mixed, and recorded by Gary Paczosa with additional engineering by Shani Gandhi at Minutia Studio.

[2] David Bowling opines, "Sweetheart of the Sun was an ambitious project for the Greencards and they were able to bring their vision to fruition.

According to Shawn Underwood, "There’s more of the etherealness in the arrangements and layers of vocals and instruments and less of the bluegrass origins of the band...[as] if Gillian and Dave borrowed some production techniques from Pink Floyd.

"[4] Sweetheart of the Sun is a concept album dealing with the band's connection to water.

As such, many critics recommend listening to the album in its entirety rather than as individual songs.