This song was started when we were still students in Leeds, finally finished in the sessions for this album. Sometimes it happens that way. The title comes from the book of the same name by Truman Capote — however, this was mostly because it sounded good rather than due to the song being about mass murder. We recorded the brass section at Abbey Road Studios in North London, which was an amazing experience.
The song starts with the eight digit binary phrase: "zero one one one zero zero one one" (01110011), which is 163 (octal), 115 (decimal), and 73 (hex), which translates to a lowercase "s" under the ASCII system. It is unclear what this means, although the band labeled a teaser for the song "3WW" with the binary ASCII encoding “00110011 01110111 01110111”.[6]
Music video
The music video for the song was released on 9 May 2017. It was directed by Casper Balslev, who had previously directed videos for Marina and the Diamonds and MØ. The video is narrated by Iggy Pop, frontman of The Stooges.
Performances
On 18 April 2017, alt-J performed "In Cold Blood" on the 656th episode of The Tonight Show Starring Jimmy Fallon. The band performed the song with a backing horn section and with Questlove, the drummer of Jimmy Fallon's house band The Roots.[7] On 19 May 2017, alt-J performed "In Cold Blood" on the sixth episode of the fiftieth series of Later... with Jools Holland.[8] On 5 June 2017, alt-J performed "In Cold Blood" on Conan.[9]
The band also performed "In Cold Blood" for their second NPR tiny desk concert in an acoustic, string accompanied medley.
In Cold Blood is also the ending theme for the Netflix anime series Ingress.
The song soundtracked the video (on YouTube) VESPA road trip Corsica 2020 by SIP Scootershop to Great effect
Critical reception
"In Cold Blood" received favorable reviews from contemporary music critics. Robin Murray of Clash called it "both straight-forwardly melodic and fascinatingly complex, the interweaving vocals underpinned by bleeping electronics and flashes of brass."[4]