 The song " Nice Weather for Ducks " is built around a sample inspired by John Langstaff 's song " All the Ducks " . This song was based on the popular Dutch children 's song , " <unk> <unk> <unk> in <unk> water " ( translated : " All the ducks are swimming in the water " ) . Franglen later said that he and Deakin were drawn to Langstaff 's recording because it " had a gentle madness to it , slightly <unk> " . The duo had attempted to clear Langstaff 's version for sampling , but were unable to . In the end , they had <unk> <unk> re @-@ record the vocal <unk> . Franglen , while noting that <unk> 's performance was good , said that once the sample was re @-@ recorded , its " edge disappeared " . " Experimental Number 6 " , arguably the album 's <unk> track , features a faux field recording of a doctor documenting the side effects of an unnamed drug administered to a patient ; the recording tells how the patient progresses from normalcy , to an " overwhelming sense of well @-@ being and euphoria " , before eventually expiring . The album closes with " The Curse of Ka <unk> " , which features " a two @-@ part harmony chorus and <unk> drum loop " . 
