There are only about ten minutes of music in the game. The music lead, Sue Kasper, was told to make the music moody and dark, like in Blade Runner. However she stated she was held back in this goal by the limited capability of sound cards at the time to sustain long notes. "One of the limitations you're working with is sustain. To have it really moody and dark you need a lot of sustainy-type sounds".[14] The music team had to include multiple MIDI files for the DOS and Windows releases. Different versions of each MIDI file were optimised for different cards. CD-quality sound was not used because of the storage required. Many versions of the base game shipped on two 1.44 Mb floppy disks. To include the 10 minutes of music at CD quality would have required over 100 Mb of space. The 10 minutes of MIDI music by comparison took up only around 100 Kb of space.