 Tenebrae 's score is very different to those the band had produced for Argento previously . The early 1980s had seen Simonetti experimenting with dance music , and he decided on a more electronic sound for Tenebrae . Simonetti described the score as an electronica / rock hybrid , with the main theme including disco elements . So it would not be difficult to accommodate Argento 's preference for long takes , Simonetti , Pignatelli and Morante made sure to play each song for 3 – 4 minutes . Recording the score , Simonetti used the Roland Jupiter @-@ 8 , Roland Vocoder Plus and Minimoog synthesizers , as well as a piano , electric piano , the Oberheim DMX digital drum , a Roland TR @-@ 808 drum machine , and Roland MC @-@ 4 music sequencer . Pignatelli played bass and fretless guitar , while Morante played electric and acoustic guitar . 
