This Week in Billboard Chart History: In 1984, Prince Reigned With His First Hot 100 No. 1

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Prince performs live at the Fabulous Forum on Feb 19, 1985 in Inglewood, Calif.

"When Doves Cry" soared to the summit. Plus, remembering feats by Katy Perry, Phil Collins & TLC.

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

July 4, 1970
The date that chart-watchers began keeping our feet on the ground and reaching for stars, thanks to Casey Kasem, as revered Billboard Hot 100 radio countdown American Top 40 debuted. The first song played? Ironically, "The End of the Road," by Marvin Gaye.

July 5, 2008
It went to No. 1 … and we liked it. Katy Perry scored her first Billboard Hot 100 No. 1 with "I Kissed a Girl." She's notched eight more No. 1s since.

July 6, 1985
Phil Collins earned his second of seven solo Billboard Hot 100 No. 1s with "Sussudio." The meaning of the word? "I set up this drum-machine pad, I got some chords and I started to sing into the microphone, and this word came out," Collins said in 1997. "I went back and tried to find another word and couldn't find one."

Added Collins, "Then I thought, OK, let's give it a meaning. What is it? The lyrics are based on this schoolboy crush on this girl at school. So, 'sussudio' became a name for this person. My older daughter's got a horse called Sussudio. I'm sure there are children all over the world with the name Sussudio, so I apologize for that."

July 7, 1984
Prince's blockbuster movie, and soundtrack, Purple Rain, produced his first Billboard Hot 100 No. 1, as "When Doves Cry" flew to the chart's top perch. The song from the late legend, who added four more No. 1s and 18 more top 10s, returned to the top 10 on the Hot 100 dated May 21, following his April 21 passing.

July 8, 1995
All four of TLC's Billboard Hot 100 No. 1s led for at least three weeks, but "Waterfalls" reigned the longest: for seven frames. The anti-infidelity anthem began its rule 21 years ago today.

July 9, 1988
Cheap Trick had long been known for its high-energy rock favorites like "I Want You to Want to Me." It was power ballad "The Flame," however, that sent the Illinois quartet to the top of the Billboard Hot 100 at last on this date 28 years ago.

July 10, 1976
Don't let the breezy melody of Starland Vocal Band's "Afternoon Delight," which topped the Billboard Hot 100 on this date 40 years ago, fool you: such lyrics as "the thought of rubbin' you is getting so exciting" aren't quite fit for the whole family.