The film features a "musical battle" sequence between Strange and his Darkhold-corrupted counterpart, heard in the track "Lethal Symphonies". The scene remixed portions of Ludwig van Beethoven's Symphony No. 5 in C minor and Johann Sebastian Bach's Toccata and Fugue in D minor, originally featuring additional pieces of classical music until Feige suggested that Elfman pit Beethoven against Bach. Raimi worked with storyboard artist Doug Lefler and What If...? director Bryan Andrews in developing the sequence, which was completed entirely during the film's reshoots.
