This Week in Billboard Chart History: In 2009, Lady Gaga Led the Hot 100 for the First Time With 'Just Dance'

The song became her first of three No. 1s. Plus, remembering feats by George Harrison, Michael Jackson & a then-days-old Blue Ivy Carter.

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

Jan. 16, 1988
The last No. 1 to date by a member of The Beatles topped the Billboard Hot 100, as George Harrison's "Got My Mind Set on You" (featuring Ringo Starr on drums) reached No. 1. Co-produced by ELO's Jeff Lynne, the song sparked the supergroup Traveling Wilburys – Harrison, Lynne, Bob Dylan, Roy Orbison and Tom Petty – which released two hit albums, in 1988 and 1990.

Jan. 17, 2009
Birth of a Monster: Eight years ago today, Lady Gaga crowned the Billboard Hot 100 for the first time, as her debut entry, "Just Dance," featuring Colby O'Donis, spent its first of three weeks at No. 1. She's since led with follow-up "Poker Face" and 2011's "Born This Way."

Jan. 18, 1964
When Beatlemania began: On this date 53 years ago, The Beatles made their first appearance on a Billboard chart, as "I Want to Hold Your Hand" entered the Billboard Hot 100 at No. 45. The iconic song would go on to become the first of the Fab Four's record 20 Hot 100 No. 1s.

Jan. 19, 1980
Michael Jackson ruled the Billboard Hot 100 with "Rock With You." The song marked his first of nine No. 1s in the '80s, the most of any artist in the decade. (He totaled 13 career No. 1s as a soloist.)

Jan. 20, 1990
Michael Bolton banked the first new Billboard Hot 100 No. 1 of the '90s, as "How Am I Supposed to Live Without You" jumped 4-1. Laura Branigan had first taken the ballad to No. 12 in 1983.

Jan. 21, 2012
Days-old Blue Ivy Carter made Billboard chart history, receiving featured credit on dad Jay Z's "Glory." As the track, featuring her cooing, debuted on Hot R&B/Hip-Hop Songs at No. 74, she became the youngest person ever to appear on a Billboard chart.

Jan. 22, 1994
Playing off the movie The Three Musketeers, the trio of Bryan Adams, Rod Stewart and Sting tripled up atop the Billboard Hot 100 for the first of, fittingly, three weeks, with the film's hit single "All for Love."