This Week in Billboard Chart History: In 2000, 'Oops,' Britney Spears Hit No. 1 'Again'

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Britney Spears backstage before her concert on the on the "Ooops! I Did It Again" Tour in Philadelphia on July 7, 2000. 

Spears' second album arrived with a then-record 1.3 million sold. Plus, remembering feats by The Beatles, Lipps, Inc. & Mariah Carey.

Your weekly recap celebrating significant milestones from more than seven decades of Billboard chart history.

May 29, 2004
Gretchen Wilson climbed to No. 1 on Hot Country Songs, for the first of five weeks on top, with the Southern pride anthem "Redneck Woman."

May 30, 1964
A flashback to the Fab Four's pure-pop days: The Beatles scored their fourth Billboard Hot 100 No. 1 with the bouncy, fun "Love Me Do."

May 31, 1980
Lipps, Inc. mixed music with real estate advice to great effect, as the disco act began a four-week residence atop the Billboard Hot 100 with "Funkytown."

June 1, 1991
Diamond Rio shined atop Hot Country Songs, as its debut hit, "Meet in the Middle," rose 3-1. The band became a force at country radio, tallying 19 top 10s, including five total No. 1s, to date.

June 2, 1990
Twenty-seven years ago today, the Mariah Carey era began on Billboard charts. The then-20-year-old newcomer made her chart entrance with debut single "Vision of Love," which debuted at No. 73 on the Billboard Hot 100 and No. 85 on Hot R&B/Hip-Hop Songs. It would eventually lead both charts.

June 3, 2000
No sophomore slump for then-18-year-old Britney Spears: 17 years ago today, she scored her second Billboard 200 No. 1 album when her second set, Oops!...I Did It Again, bowed at the summit. Starting with 1.3 million sold in is first week, according to Nielsen Music, the set held the record for the most sales in a week for an album by a female artist (since Nielsen began tracking U.S. sales in 1991) for more than 15 years, until Adele's 25 rocketed in with a record (among all acts) 3.38 million in November 2015.

June 4, 2005
More Mariah Carey: "We Belong Together" ascended 2-1 for its first of 14 weeks atop the Billboard Hot 100. The song would also reign as the top title on the 2005 year-end Hot 100.