The band Steely Dan - in essence the musicianship and songwriting team of Walter Becker and Donald Fagen - has long divided the critics : some have marvelled at a highly imaginative blend of intelligent, "literary" lyrics and a carefully crafted influence of jazz and Latin rhythms within the rock template, whilst others have detected a certain coldness in the work, due perhaps to over-elaboration and perfectionism. Of course, deciding to name your b.nd after a dildo in William Burroughs's cult novel Th Naked Lunch will invite criticism , but none of those who questioned Steely Dan's Status at the top of the tree of 70s rock could ever seriously dispute the immaculate execution of their vision.