The Joker soundtrack album features an original score by Emmy Award-winning composer Hildur Gunadttir (Chernobyl, Sicario: Day of the Soldado), whose composition features the cello as the centerpiece of the score, leading string-based melodies played by a symphony orchestra of 90 musicians. It won the following accolades: WINNER BEST ORIGINAL SCORE ACADEMY AWARD GRAMMY AWARD GOLDEN GLOBE AWARD BAFTA AWARD To interpret the many themes explored throughout the film, director Todd Phillips very early on turned to the composer. Hildur was writing music as far back as pre-production. I was sending her script pages and she was writing music before we even shot, and what she did for the film is so unique, says Phillips. Gunadttir remarks, Todd asked me to write some music based on my feelings from reading the script, which I was inspired to do because it truly resonated with me. She sent him a sample and recalls, The film is a gritty character study, which to me translated to melodies that are very simple and monotonic, because thats kind of the way Joaquins character Arthur is seeing things. Then I tried to expand within that simplicity the orchestration around Jokers evolution not with chords or any complicated music, but with texture that I felt resonated with the melancholia of this character.