'Don't Be A Dummy' was oringinally a British TV advert Gary Numan (of the then Tubeway Army) recorded in late 78/early 79 for Lee Cooper Jeans which was screened in late 1979. It was done on the back of someone from the ad agency hearing the first Tubeway Army album. Gary only did the singing. The track only lasts about 20 seconds and can be found at the end of the Tubeway Army compilation CD. It is not listed as a seperate track and is actually tacked onto the end of Remember I Was Vapour (Live). After Gary became famous, the people behind the advert asked him if he would record a longer version to put out as a single. He refused although a single was put out but with John Du Cann (hippe guru from Atomic Rooster) doing the singing.
