[4] The working title of the album was Utopian Enterprise, then changed to Heart, before the band settled on Blood Inside.

[5] Speaking about the evolution of the album, Kristoffer Rygg commented, "Utopian Enterprises is a title we all like and it goes back to Perdition City and some ideas stemming from that period, but as the lyrics took form it did not fit anymore.

Thinking only in key words: heart, blood, red, rose, beauty, violence, body, life, death, ambulance, hospital and so forth.

While we did get into the film industry, our illusions of how fun and easy it would be to score motion pictures were downed pretty fast as soon as we got more acquainted with those people and their working methods.

Now, having been a somewhat voiceless and underlying stratum in other people's visions for a while, we just felt like we had to put up a big fat wall of sound this time around.

"[11] SputnikMusic commented, "[Blood Inside] is ambiguous and full of intricate layers and influences working to tell a story that is both haunting and mesmerising.

Garm’s beautiful distorted vocals act as outcries of a desperate man hidden, pushed in the background of the story that the instrumentation tells.

"[12] Webzine Avantgarde-metal.com concluded: "the sound of the album is maybe their most extravagant, extrovert, dynamic and wild, ranging from swing band to danceable hard electronic pop, with a lot of peaceful moments in between so much energy.

"[13] Eduardo Rivadavia, writing for AllMusic, commented, "The Norwegians' first non-soundtrack release in many a year also brings about some notable changes.

Foremost among them being the decision to abandon some of the stark minimalism that characterized those efforts, so that by comparison, the predominantly synthesizer-wrought compositions on hand here sound positively sumptuous."

Concluding, "As one has come to expect from Ulver, the total end result is unfailing eclectic, remarkably inspiring, and never less than a brave step into the depths of the unknown.