song. Tony Levin added bass to create a more harmonious sound, and during the second half of the track, put a nappy behind his bass strings to dampen the sound. Gabriel ensured the song, which follows a narrative of an unemployed man and his lover, was written as a conversational piece. He initially sought Dolly Parton to portray the woman; although Parton declined, his friend Kate Bush agreed to feature. Bush serves as the song's respondent, she assumes a comforting role and with delicate vocals, sings lines such as "Rest your head/ you worry too much". The album's first side culminates with "That Voice Again", in which Gabriel explores the concept of conscience, examining the "parental voice in our heads that either helps or defeats us". Co-written with David Rhodes, who plays guitar over Katché and Levin's input, the song was written after Gabriel's initial discussions with Martin Scorsese about scoring The Last Temptation of Christ (1988). Side two "In Your Eyes" has been described as Gabriel's greatest love song. Inspired by the Sagrada Família and its architect Antoni Gaudí, Gabriel sings over a drumbeat of only feeling complete in the eyes of his lover. The track's powerful atmosphere is created through the singing of Senegalese musician Youssou N'Dour, who sings in his native Wolof. Gabriel became interested in the late American poet Anne Sexton after reading the anthology To Bedlam and Part Way Back. He dedicated Sos sixth track to her, calling it "Mercy Street" after "45 Mercy Street", a poem released in another posthumous collection. "Mercy Street" is set to one of several Forró-inspired percussion compositions that Gabriel recorded in Rio de Janeiro. When these compositions were unearthed in the studio, they were accidentally played back ten per cent slower than the original recording, giving them a grainy quality that Gabriel and Lanois thought highlighted the cymbal and guitars. It features two harmonious Gabriel vocals; one a shadow vocal an octave below the main vocal. Intended to give a sensual, haunting effect, this was hard to capture except when Gabriel first woke up. The dance song "Big Time" has funk influences and is built on a "percussive bass sound". Its lyrics satirise the yuppie culture of the 1980s, materialism and consumerism and are the result of Gabriel's self-examination, after he considered whether he may have desired fame after all. "We Do What We're Told (Milgram's 37)" was recorded