Fleetwood Mac topped the Billboard Hot 100 chart with their hit single “Dreams” on June 18, 1977, The track was written by band member Stevie Nicks and was originally released as part of the smash album “Rumours,” one of the best-selling LPs of the 1970s.Released to radio that March, “Dreams” eventually took over the top spot by pushing out KC and the Sunshine Band’s hit “I’m Your Boogie Man.” Nicks and company held on at the top for one week before they handed the top spot over to Marvin Gaye with "Got to Give It Up (Part 1).”The hit single came at a time of major internal strife for the band. Keyboard player Christine McVie was separating from her husband, the band’s bassist, John McVie. Lindsay Buckingham and Stevie Nicks were also in the process of splitting up after an eight-year relationship, and drummer Mick Fleetwood was going through a painful divorce. “I think one day John and I will write a book about what went down,” Mick Fleetwood told the Los Angeles Times of the tense period.