Hitchcock insisted that Bernard Herrmann write the score for "Psycho" despite the composer's refusal to accept a reduced fee for the film's lower budget. The resulting score, according to Christopher Palmer in "The Composer in Hollywood" (1990) is "perhaps Herrmann's most spectacular Hitchcock achievement." Hitchcock was pleased with the tension and drama the score added to the film, later remarking "33% of the effect of "Psycho" was due to the music." and that "Psycho depended heavily on Herrmann's music for its tension and sense of pervading doom." The singular contribution of Herrmann's score may be inferred from the unusual penultimate placement of the composer's name in the film's opening credit sequence, as it is followed only by Hitchcock's directing credit.