The 2016 Grammy Awards, set to take place in February of next year, are already marring some musicians' 2015. As nomination announcements were made this morning (Dec. 3), Kendrick Lamar pulled in the most nominations of any hip-hop artist. The Weeknd, Nicki Minaj, Wiz Khalifa and more from the rap world were also nominated but one artist has already taken to social media to express frustration about not being recognized.

Omarion is upset his 2014 single "Post To Be" featuring Jhene Aiko and Chris Brown was left out of the running.

Though it was technically released in November of 2014, Omarion's "Post To Be" was undoubtedly a summer 2015 hit. The catchy hook, the blended vocals, DJ Mustard's beat and Jhene Aiko's pun-filled guest verse (you know the line we're talking about) all made for a surefire chart climber. The single off O's Sex Playlist peaked at number five on Billboard's Hot R&B/Rap Songs chart, making it Omarion's second most successful single to date after his 2006 ballad, "Ice Box."

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