The singer teamed up with Chris Brown and Jhene Aiko for the electro-hop R&B tune, and although the song has been making waves on the American music charts, it was not among the contenders for Best R&B Performance when the 2016 Grammy Award nominations were announced on Monday morning.

In response, the former B2K singer took to to share his frustrations, calling Post to Be "one of the greatest R&B collaborations ever".

"CB (Brown), Jhene, & myself been in the game 10+ (years)," he wrote. "Even though people act like its easy to make a hit (& it's not). As an artist you look forward to being acknowledged by the game. The odds have always been against me. I constantly prove you wrong. I'll consistently do great things & you will have to celebrate me."

"This isn't a 'im upset' (post to be) rant," he continued. "This is a - ok so that wasn't good enough. I'll be back. Have my Grammy's ready. The game has long changed since I was introduced to it. They want to still treat me like I'm a new to this. My moment is coming trust."

He concluded, "So when it's all said & done. Remember. I prophesied it. It's my destiny. I was destined. Chosen. Congratulations to all the nominees! Enjoy this milestone."

Omarion, whose album O was nominated for Best Contemporary R&B album in 2006, will now watch as his peers Miguel, The Weeknd, Jazmine Sullivan, D'Angelo and The Vanguard and Tyrese battle for the coveted award at the annual music prizegiving on 15 February (16).