The words "when the moon is in the seventh house, and Jupiter aligns with Mars" are lyrics from the song "Aquarius / Let the Sunshine In," popularized by the group The 5th Dimension. The song is a medley of songs originally from the 1967 musical "Hair."
The lyrics are by James Rado and Gerome Ragni, with music by Galt MacDermott. The 1969 cover by The 5th Dimension stayed at number one for six weeks on the Billboard Hot 100 pop chart. The lyrics describe the age of Aquarius, an astrological event that some believe will create a world of love, light and humanity.