If a song tops Billboard, it means only one thing.

Music is ever-evolving. From the Renaissance Period through the Classical Period and to the Trap bangers we are graced with today, music is always changing. The only constant is our undying love for it.

Of course, some songs and artists catch a little more love than others. The bias we show generally defines who we are. Similarly, the music that we overplay in a year generally defines the kind of music we momentarily adored.

These are the songs that you always hear on your favorite radio stations. And when you go to switch the channel, there it is again. Clubs and bars love these chart toppers, and everyone from your five-year old niece to your fifty five-year-old uncle know the lyrics.

Some of these songs might have been so overplayed, they’ve already been strongly engraved into the very fabric of your ear drum. When you realize the song was released almost ten years ago, you may even be stunned. After all, the radio never turns it’s back on a chart topper.

If you’re ready, lets take a musical stroll down memory lane. Be warned, some of these songs may fill you with a choking nostalgia while others may make your neck cringe with PTSD-esque ferocity.

1. 2010: Ke$ha - Tik Tok

Close second: Lady Antebellum – Need You Now

2. 2011: Adele - Rolling in the Deep

Close Second: LMFAO – Party Rock Anthem

3. 2012: Gotye feat. Kimbra - Somebody That I Used to Know

Close Second: Carley Rae Jepsen – Call Me Maybe

4. 2013: Mackelmore - Thrift Shop

Close Second: Robin Thicke – Blurred Lines

5. 2014: Pharel - Happy

Close Second: Katy Perry – Dark Horse

6. 2015: Mark Ronson feat Bruno Mars - Uptown Funk

Close Second: Ed Sheeran – Thinking Out Loud

7. 2016: Justin Bieber - Love Yourself

Close Second: Justin Bieber – Sorry

8. 2017: Ed Sheeran - Shape of You

Close Second: Luis Fonsi – Despacito

9. 2018: Drake - God's Plan

Close Second: Ed Sheeran – Perfect

10. 2019: Lil NasX - Old Town Road

Close Second: Post Malone – Sunflower