sentences:  They also achieved two number one's, one being girl duo Mel and Kim's "Respectable", and created a huge star with the baritone-voiced singer Rick Astley.In 1987 he had a number one album with "Whenever You Need Somebody", and several high charting singles including the title track and the biggest selling single of the year, his number 1 breakthrough song "Never Gonna Give You Up".Madonna continued her long run of Top Ten hits throughout the year, scoring two number one's, "La Isla Bonita" in April and "Who's That Girl" in July; the former was her third number one single from the multi-million selling album "True Blue" and the latter was taken from the film of the same name in which Madonna herself starred.