The second single from Tango In The Night, this song was written by Stevie Nicks' friend and sometime collaborator Sandy Stewart with some modifications by Nicks, who is credited for "additional lyrics" on the album. Stewart is a singer/songwriter who released a solo album in 1984 called Cat Dancer, which featured Nicks on backing vocals for three songs. She co-wrote three songs on Nicks' 1983 solo album Wild Heart: "If Anyone Falls," "Nightbird" and "Nothing Ever Changes," and also performed on several tracks.
The song is about a moment that is so special, nothing will ever approach its beauty. Stevie Nicks sings that even if she gets to see the seven wonders of the world, it won't match this moment.
The lyrics Stevie Nicks added and altered were improvised in the studio - the line "all the way down to Emmeline" was something she misheard from the original. Stevie never wrote down her lyrics, she just sang them. She has said that she isn't sure what possessed her to make the changes, and that she could not have repeated it.
In the 2014 finale of the TV series American Horror Story: Coven, Stevie Nicks opens the episode, which was called "The Seven Wonders," by performing this song. Nicks had appeared on a previous episode and was a plot point in the series. In the show, the "seven wonders" are a series of challenges the witches must perform to determine their next leader.