Singer Omarion says that his hit single "Post To Be" featuring Jhene Aiko and Chris Brown should have been nominated for a Grammy. Monday morning, the nominations for the 58th Annual Grammy Awards were announced and the singer was shocked that his collaboration never made the list.

"'Post To Be' is one of the greatest R&B collaborations ever. CB, Jhene, & myself been in the game 10+." He tweeted, "Even though people act like it's easy to make a hit (& it's not). As an artist you look forward to being acknowledged by the game."

Some fans criticized him, however he explained that he'd been overlooked throughout his career, but always landed back in the spotlight, "The odds have always been against me. I constantly prove you wrong. I'll consistently do great things & you will have to celebrate me." He told fans that he'll have more hit songs coming out soon that will earn him a Grammy nod.

"This isn't a "I'm upset" (post to be) rant. This is a- ok so that wasn't good enough. I'll be back. Have my Grammys ready," he said.