This Week in Billboard Chart History: In 1988, An 'Emotional' Whitney Houston Hit No. 1

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Whitney Houston photographed in 1988.

Plus, remembering feats by Usher, Christina Aguilera & Garth Brooks.

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

Jan. 8, 1944
Happy 74th birthday, earliest origins of a Billboard country chart! The first incarnation of such a tally, then known as "Most Played Juke Box Folk Records," was topped by Bing Crosby and the Andrews Sisters' "Pistol Packin' Mama."

Jan. 9, 1988
30 years ago: Whitney Houston notched her sixth of a record seven consecutive Billboard Hot 100 No. 1s, as "So Emotional" rose 2-1.

Jan. 10, 1998
20 years ago: Usher spent his first week at No. 1 on the Top R&B/Hip-Hop Albums chart with My Way. To date, his five leaders on the list have reigned for a cumulative 25 weeks.

Jan. 11, 2003
15 years ago: Christina Aguilera began a four-week reign on the Pop Songs chart with her empowerment anthem "Beautiful."

Jan. 12, 1991
Garth Brooks took over atop Hot Country Songs with his plaintive ballad "Unanswered Prayers." All four singles from parent album No Fences topped the tally; "Prayers" followed "Friends in Low Places." "Two of a Kind, Workin' on a Full House" and "The Thunder Rolls" would become the set's third and fourth leaders, respectively.

Jan. 13, 1990
We were all a part of it: Janet Jackson's "Rhythm Nation" conquered the Hot R&B/Hip-Hop Songs chart.

Jan. 14, 1989
Bobby Brown hit heights that he didn't as part of New Edition: his solo smash "My Prerogative" topped the Billboard Hot 100. In 1990, he'd add a second No. 1 apart from the group as featured on Glenn Medeiros' "She Ain't Worth It." Meanwhile, Britney Spears would take her cover of "My Prerogative" to No. 22 on the Pop Songs chart in 2004.