[5] He previously assisted Hans Zimmer on the music of The Dark Knight trilogy, which is also based on the DC Comics character Batman.

[6] Red Hot Chili Peppers band's principal drummer Chad Smith, played drums for the score.

Speaking about Smith's inclusion Balfe had said "it brought a whole different dimension to the score [...] It’s not banging drums; it’s the attitude behind playing them.

"[8] For us, music was more about a journey on this one, from that “Who’s The Batman” style to, ultimately, Michael Jackson and finally “Friends Are Family,” which to me is just… I wanted the movie to end with joy.

Speaking to Entertainment Weekly, he said that "I think if we had more time, there would have been a version of this movie that would have been a full musical and had more point of view songs like that for sure.

Hefti's theme from the television series was interpreted for the original song "Who's The (Bat)Man" performed by Fall Out Boy frontman Patrick Stump.

[15] Writing for Film Stories magazine, Mark Harrison in his review for the collection of Batman soundtracks, singled out on The Lego Movie saying "The LEGO Batman Movie’s soundtrack is designed to capture the conflicting identities of the Dark Knight, with an action score that veers between dramatic and tongue-in-cheek, as well as a bunch of pop-music needle-drops.

"[17] James Southall of Movie Wave wrote "Its sheer energy as it carries you along is enough to keep the entertainment coming, but there is almost too much packed in, the changes in style sometimes so frequent, the pace so unwaveringly swift, you’re left building up a real sweat just listening to it.

"[18] Filmtracks.com wrote "Balfe continues to prove himself a master builder of really impressive, intelligent music for this genre, and his work here is ironically more engaging in most parts than his friend Hans' comparatively serious take on the same world.