 Banks wrote most of " Firth of Fifth " on his own , and had presented it to the group for Foxtrot , but it was rejected . He reworked some sections of the song for Selling England by the Pound , where it drew a more positive reception . The track opens with a solo piece for piano , that is repeated by the band later in the song . Hackett took one of Banks ' piano figures and rearranged it as a guitar solo , which dominates the latter part of the track . 
