"The Ballad of Gilligan's Island, written by Sherwood Schwartz and George Wyle, served as the theme song for the CBS television series "Gilligan's Island," which aired from 1964 to 1967. The theme that played at the beginning of each episode during the first season differed slightly from the one that played the second and third seasons.
The song acts as a prologue to the series, telling what happened to cause seven people to become stranded on an uncharted island. It informs the audience that two crew members and five passengers started out one afternoon on what was supposed to be a three-hour boat tour. A storm came up and blew them off course
The song also introduces the characters: the skipper, his mate (Gilligan), a millionaire and his wife, the movie star and the rest. "The rest" was how the first version referred to the characters known as the Professor and Mary Ann. Bob Denver, who played Gilligan, personally asked that the song be changed to list the other two characters, so the next song changed "and the rest" to "the professor and Mary Ann."
The last verse tells how "the first mate and his skipper too will do their very best" to help everyone be as comfortable as they can be in the situation. It reminds viewers of the primitive conditions the group faces and implores them to "join us here each week my friends, you're sure to get a smile from seven stranded castaways here on Gilligan's Isle."