 Sierra composers Mark Seibert and Jay User created the musical score for Phantasmagoria , with Neal <unk> providing additional music . Most of the music is a mixture of real instruments with synthesized and sampled sounds , and unlike previous Sierra games , the score was recorded live , rather than created in the computer . Themes for the music ranged from rock and roll to opera . The composers observed the game and various scenes to prepare their score , trying to create an ambiance and identify spots to build the tension with music , creating stingers as needed . For cinematic scenes , they watched tape of them after the scenes were shot and composed the music afterward . This was a new process for Sierra and the computer game industry in general , but the same concept regularly followed in the film industry . 
