5. Pharrell Williams - Happy
We all could use a song like this today! It makes us feel good. PLUS, who doesn't love a good Pharrell hat? Right?!
4. Flo Rida - Right Around
This was the first song we ever heard Kesha on. AND a lot of people don't know that this song was written by Bruno Mars!! Before we really knew who he was, too. Cool, right?
3. Usher - Yeah
This song was the BIGGEST hit of 2004. It spent 12 weeks at #1 and it just so happened to be #1 on this date!
2. Ace of Base - The Sign
When Ace of Base released their album in America, this was the title of the album. But when they released it everywhere else, it was titled 'Happy Nation'. 'The Sign' spent 6 weeks at #1, and was Billboard's #1 song of 1994.
1. Michael Jackson - Billie Jean
One of Michael Jackson's most ICONIC hit off of his legendary 'Thriller' album. (which BTW is still the best-selling album in the US to this day).