In a three-and-a-half star review for CCM Magazine Kevin Sparkman wrote "Heller continues her proven formula of innocent melodies, heart moving lyrics, and inviting musical moments.

"[2] Awarding the album four stars, Mark D. Geil from Jesus Freak Hideout states "Sound of a Living Heart is an encouraging sign of a continued upward trajectory.

"[4] Giving the album four and a half stars at New Release Today, Caitlin Lassiter wrote that "Sound Of A Living Heart proves to be a success for the Heller crew and is sure to be met with fan approval.

"[7] Kevin Davis, in a five star review by New Release Today, called the album "flawless...you'll hang on every word she emotionally sings.

"[8] In a 4.5 out of five review for The Christian Beat, Abby Baracskai wrote that "with this album, JJ Heller gives the world a work of art...Sound Of A Living Heart is full of unique musical creations paired with meaningful and faithful lyrics that help bring you closer to God.