With one phone call and few niceties, two world leaders made history on Friday.
US President Barack Obama called Iranian President Hassan Rouhani, thereby ending 34 years of animosity between the two nations.
What happened 34 years ago? Supreme Leader Ayatollah Khomeini regained power in Iran and ordered the expulsion of all foreigners from the country.
His reasons were numbered and varied, but included the fact that they were listening to extremely questionable music.
As the US-backed shah fled Iran, here is what much of the West was listening to, the Top 10 from the Billboard Hot 100 singles list of 1979:
1) "My Sharona" The Knack
2) "Bad Girls" Donna Summer
3) "Le Freak" Chic
4) "Da Ya Think I'm Sexy?" Rod Stewart
5) "Reunited" Peaches & Herb
6) "I Will Survive" Gloria Gaynor
7) "Hot Stuff" Donna Summer
8) "Y.M.C.A." Village People
9) "Ring My Bell" Anita Ward
10) "Sad Eyes" Robert John