It's that time of year again. We're looking back on the last 365 days of the year and asking ourselves: "What was the one song that owned 2013?" There are many factors that go into choosing the track that tops our year-end countdown, but at the end of the day - it's all about what YOU think, right?

That's why we're asking for your input on 2013's song of the year. Leave all the analytical stuff to us when it comes to the rest of the songs in the countdown, and focus on choosing what song you think totally defined the year 2013.

We've given you 15 of the best to choose from, and you only have to choose one. Based on your votes, we'll actually determine the top ten songs in our countdown, set to air on New Year's Eve.

You have until Dec 31 at noon to vote, and you can vote as often as you would like and for as many songs as you want. To help you out, we've included the videos (in no particular order) so you can reminisce. Voting is in a poll at the bottom of this post, and we thank you for your input!

Here's to an amazing 2013, and an even better 2014!

Robin Thicke - Blurred Lines (feat. T.I. & Pharrell)

Macklemore & Ryan Lewis - Can't Hold Us (feat. Ray Dalton)

Justin Timberlake - Suit & Tie (feat. JAY Z)

Katy Perry - Roar

Bruno Mars - When I Was Your Man

Macklemore - Thrift Shop (feat. Wanz)

Justin Timberlake - Mirrors

Rihanna - Stay

Daft Punk - Get Lucky (feat. Pharrell & Nile Rodgers)

Miley Cyrus - Wrecking Ball

Lorde - Royals

Avicii - Wake Me Up

JAY Z - Holy Grail (feat. Justin Timberlake)

Drake - Hold On, We're Going Home (feat. Majid Jordan)

Miley Cyrus - We Can't Stop