Icelandic composer Thorkell Sigurbjörnsson, whose principal instrument is the piano, studied music at the Reykjavik College of Music. In the '50s, he came to the US and continued his studies in composition and electronic music, most notably at the University of Illinois under Kenneth Gaburo and Lajaren Hiller. La Jolla Good Friday is an electronic piece composed while on a visit to the Center for Music Experiment at the University of San Diego. Taken from the back notes-
"On Good Friday, everyone had left the Center for Easter vacation. I should be returning home in four days. Sitting there, all alone, admiring all the paraphernalia from the computer to the 4-channel tape recorder, all my grand plans about how I was going to use the day slowly disintegrated. They were replaced by something else: mysterious and beautiful harmonies filled my head. They came and they went. I was in tune with Kepler! A true and wondrous inspiration. However, I soon discovered its source. It was not of divine origin. Outside the studio doors, an old janitor was just using the opportunity, when nobody was around, to wax the floors with his machine. They were creating this din. What followed, can be heard on this record, with one modification-the four tracks are compressed into two..."