Arrival (soundtrack)

Jóhann Jóhannsson was involved in pre-production for Arrival, and took early influence for the score from the film's script, concept art and initial discussions with director Denis Villeneuve about its mood and themes. It was their third and final collaboration following Prisoners (2013) and Sicario (2015).[4][5] The pair did not discuss the music in detail; Jóhann recalled that Villeneuve "basically gave [him] carte blanche to experiment", particularly in the early stages of composition, before collaborating more closely alongside the film's editor Joe Walker once "the sound [had] been established" in order to "[find] the right places, the right moments for music" within the film.[6][7] Arrival was shot without temp music, which meant Jóhann needed to have material ready before the editing process; he also noted that this approach required "good rapport and communication between the three of [them]".[8] The film was edited first without music to ensure that each scene worked on its own without it, before Jóhann's score was reintroduced as "a strengthener".[9]

Due to the importance of language and communication in the film's story, Jóhann immediately decided that his score would need to prominently feature the human voice.[10] However, he sought to distance himself stylistically from the work of György Ligeti, due to the association of his vocal music with the classic 1968 science fiction film 2001: A Space Odyssey, and therefore avoided cluster chords and micropolyphony in favor of "irregular and arrhythmic patterns of short notes which start small and are then layered to create a kind of cloud of short staccato polyrhythmic voices".[8] He likened the resultant "Morse code-like phrases" to "the babbling of a new infant trying to understand – or subconsciously absorb – the basic structure of a language", further reflecting the themes of the film.[11] Jóhannsson intended the score to contain "very unconventional, avant-garde, extended-technique choral writing as opposed to the more traditional choir sounds",[12] so he worked with the vocal ensemble Theatre of Voices due to their "very good command of exotic vocal techniques".[6] He took further influence from pieces such as Stimmung (1968) by Karlheinz Stockhausen, particularly through the composer's "use of overtones and harmonic singing and his aleatoric approach to performance",[8][13] as well as the work of spectralist composers Gérard Grisey and Horațiu Rădulescu.[6] For the score's orchestral and choral writing, he consulted the work of composers such as Grisey, Giacinto Scelsi, Michael Gordon, Georg Friedrich Haas and Meredith Monk.[8]

Jóhann also prominently used tape loops in his score to reflect the circular motifs found in Arrival, such as the logograms that make up the aliens' written language.[12] He used a 16-track analogue tape recorder to record a long tape loop with layers of piano drones (sustained without the attack) that were recorded at different speeds and then slowed down. He also enlisted frequent collaborator Lichens to sing and hum a sequence of notes over the drone "in a unique, harmonic way that's hard to distinguish as a human voice". Jóhann described the end result as "an extremely eerie, unsettling piece of music without any processing at all".[13][14] The score's percussion was largely wooden, such as "basic" 2×4 planks of wood played with mallets, and was recorded in a "large reverberant space" before being layered and digitally processed with added effects. These sounds were typically used during the film's more action oriented scenes.[10]

All tracks are produced by Jóhann Jóhannsson.[44]