leslie david reed (24 july 1935 – 15 april 2019) was an english songwriter, arranger, musician and light orchestra leader. he was best known writing for the tom jones songs "it's not unusual" and "delilah", and the engelbert humperdinck song "the last waltz". his main songwriter partners were gordon mills, barry mason and geoff stephens. however, he also wrote songs with roger greenaway, roger cook, and johnny worth. he won many gold discs and ivor novello awards. reed also conducted his own band, the les reed orchestra.