During the album production, Townshend made many field recordings with a portable reel-to-reel recorder. These included waves washing on a Cornish beach and the doppler whistle of a diesel train recorded near Townshend's house at Goring-on-Thames. The ending of "The Dirty Jobs" includes a musical excerpt from "The Thunderer", a march by John Philip Sousa, which Nevison recorded while watching a brass band play in Regent's Park. Assembling the field recordings in the studio was problematic; at one point, during "I Am the Sea", nine tape machines were running sound effects. According to Nevison, Townshend produced the album single-handedly, adding that "everything started when Pete got there, and everything finished when Pete left". Townshend began mixing the album in August at his home studio in Goring along with Nevison.