The soundtrack drew from the film score, composed by Hans Zimmer and James Newton Howard, as well as contributions by Ramin Djawadi, Lorne Balfe and Mel Wesson.

The main motif of the film (and later of the whole trilogy) consists of just two notes, played by horns and accompanied by strings, representing Batman's pain and guilt.

Zimmer and Howard began composing in Los Angeles and moved to London where they stayed for 12 weeks to complete most of their writing.

Zimmer enlisted a choir boy to help reflect the music in the film's scene where Bruce Wayne's parents are killed.

[9] Movie Music UK was equally positive—Jonathan Broxton claimed that "I personally found that there was a great deal of music in Batman Begins that is hugely enjoyable", specifically complimenting "Howard's exceptionally beautiful string elegy [...] during the opening moments of Eptesicus", a motif that recurs in "the achingly emotional Macrotus and Coryhorinus".

[10] Christian Clemmensen, sole reviewer of Filmtracks.com, was less ready to praise the score, saying that Zimmer and Howard's decision not to use Elfman's material was an attitude that "stinks of laziness".

"Molossus" was sampled for the Aquaman pilot, and was also used in the trailer for V for Vendetta and The Dark Knight as well as a few episodes of Top Gear.

All music is composed by Hans Zimmer and James Newton HowardTracks not included within the release of the soundtrack:[14] Written by Arrigo Boito.