Episode 27
Doraemon and Nobita are invited to another of Gian's singing event. This time, Doraemon gives Gian candy that lets him sing like a real singer by storing the voice in the candy. Gian believing it to be his own voice, enters a televised youth singing contest. The problem. however is the candy only lasts 30 seconds before wearing off.
Aired 02/05/1979EP 27 - Episode 27
Doraemon
Nobi Nobita is a 4th-grade boy in Tokyo. One day, a round, blue cat-style robot (minus ears) pops up in his desk drawer. Nobita's great-great-grandson (or something) lives in the 22nd Century, but thanks to Nobita's mistakes, the entire family is living in poverty. To rectify this, Nobita's descendent is sent Doraemon back to the past, to help prevent Nobita from making mistakes. Of course this is a difficult task since Nobita is the weakest and least intelligent child in his class. Doraemon does, however, have a 4-dimensional pocket on his front, which contains cool gadgets from the future. With these toys, Doraemon will try to help Nobita. Unfortunately, Nobita also has the bad habit of misusing Doraemon's gadgets and landing himself in yet more trouble?
(Source: AnimeNfo)