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30 Years Ago, The Billboard Hot 100 Singles Were Forever Changed By Broadcast Data Systems and SoundScan – Billboard Chart Rewind
![EMF on Twitter: "On this date in 1991, “Unbelievable” hit #1 on the Billboard Hot 100 singles chart. #EMF #EMFTheBand #Unbelievable #Billboard #Hot100 #BillboardHot100 https://t.co/gsJbOdX7cZ" / Twitter EMF on Twitter: "On this date in 1991, “Unbelievable” hit #1 on the Billboard Hot 100 singles chart. #EMF #EMFTheBand #Unbelievable #Billboard #Hot100 #BillboardHot100 https://t.co/gsJbOdX7cZ" / Twitter](https://pbs.twimg.com/media/DijSz5EVQAARg9q.jpg)
EMF on Twitter: "On this date in 1991, “Unbelievable” hit #1 on the Billboard Hot 100 singles chart. #EMF #EMFTheBand #Unbelievable #Billboard #Hot100 #BillboardHot100 https://t.co/gsJbOdX7cZ" / Twitter
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Performances That Pop: Whitney Houston's Medley at the 1991 Billboard Music Awards - When Things Go Pop
![Billboard top 50, August, 1991 issue of Rolling Stone. One month before Nirvana released Nevermind. : r/pics Billboard top 50, August, 1991 issue of Rolling Stone. One month before Nirvana released Nevermind. : r/pics](https://external-preview.redd.it/_FUJKYO8BjdnaKtifNEgVLI1iv4EFPX4QOMIKQwsZqk.jpg?width=640&crop=smart&auto=webp&s=e6becd4269b304b086b22f94358e8f11ea32b842)
Billboard top 50, August, 1991 issue of Rolling Stone. One month before Nirvana released Nevermind. : r/pics
![Gloria Estefan's “Coming Out of the Dark” Hit No. 1 on the Hot 100: This Week in Billboard Chart History, 1991 | Billboard – Billboard Gloria Estefan's “Coming Out of the Dark” Hit No. 1 on the Hot 100: This Week in Billboard Chart History, 1991 | Billboard – Billboard](https://www.billboard.com/wp-content/uploads/media/Gloria-Estefan-in-Sydney-1991-a-billboard-1548.jpg)