1973: Jim Croce's "Time in a Bottle" tops the Hot 100, the second of three posthumous hits for the late singer / songwriter.
1974: Although Cher had earlier turned the song down, "Angie Baby" becomes a number one hit in the US for Helen Reddy. Cher had also rejected "The Night the Lights Went Out In Georgia", which Vicki Lawrence took to the top in April, 1973.
1969: The Supremes final single release with Diana Ross, "Someday We'll Be Together", becomes the last US number one song of the sixties. It made #13 in the UK.
1970: George Harrison's "My Sweet Lord" becomes the first Beatles solo single to top the Billboard Hot 100. Five years later, a New York state judge would find Harrison guilty of copyright infringement for plagiarizing the Chiffon's 1963 hit, "He's So Fine". The ruling would result in a legal battle that would carry on until 1998, with Harrison paying out $587,000.
1982: In one of the most successful duets in Christmas music history, and surely the strangest, 30-year-old David Bowie and 73-year-old Bing Crosby achieved the number one song in the UK with "Peace On Earth / Little Drummer Boy". The song had been recorded in September, 1977 when Crosby was in Great Britain to tape a TV special called Merrie Olde Christmas. Having him share a number with Bowie was the brainchild of producers Gary Smith and Dwight Hemion. After the recording circulated as a bootleg for several years, RCA decided to issue it as a single. It has since become a holiday standard, but it is entirely possible that neither Crosby or Bowie were familiar with each other's work.