Jay Z's ex, Blu Cantrell goes "bananas" on the streets at 2am, Taken for Psych Evaluation

Sure you guys are familiar with "Blu Cantrell" the "two hit wonder" .. Breathe and Hit me Up , Remember her? .She dated Jay Z before he met Beyonce , and when Blue Ivy was born, she claimed Jay Z named Ivy after her..

According to TMZ,she was hospitalized after ranting in the streets at 2am.

Singer Blu Cantrell went running through the streets, ranting about people trying to kill her last night ... until police took her into custody for psychological evaluation. Cantrell went seemingly berserk in a Santa Monica neighborhood around 2 AM on Wednesday. Witnesses tell us she was screaming about someone giving her "poisonous gas." The episode went on long enough that someone called police.

We're told when officers arrived, Blu -- famous for her 2001 hit "Hit 'Em Up Style (Oops!)" -- played the "do you know who I am card" ... but also referred to herself as a "one hit wonder."Law enforcement sources tell us cops took Blu to a nearby hospital where doctors checked her out. Oh dear! .. See another photo of Blu Cantrell with dance hall artist Sean Paul  in her "Breathe" music video below