Vote for your favorite songs, albums, artist, music videos and moments of 2014's first half!

In a few weeks' time, 2014 will be halfway done -- and a fantastic year of popular music will already be in the books. From Pharrell's "Happy" run to the newfound stardom of Iggy Azalea to Daft Punk taking over the Grammys to the long-awaited Outkast reunion, this year has been host to some musical moments that will resonate long after the year ends. Now, it's your turn to sound off on the most unforgettable pieces of pop over the past six months.

With the first half of 2014 nearly complete, cast your vote now in the fourth annual Billboard.com Mid-Year Music Poll to tell us what artists, songs, albums, videos, tours and fashion choices have defined this year. Which Hot 100 chart-topper was your go-to jam? What single moment was the most buzzworthy of 2014? And which new artist do you think enjoyed the biggest breakout? We've offered a few suggestions for each category, but feel free to write in a candidate.

Vote now in the 2014 Mid-Year Music Poll, and we'll announce all of the winners at the beginning of July on Billboard.com!