Jay Z may be the next Ed McMahon ... 'cause his search for new rap stars continued last night in Chicago during a concert -- and this time he chose a girl looking for a second chance.
HOVA brought the girl on stage at the United Center after he spotted her holding a sign saying, "When I was 16 I rapped on this stage with you. I'm 19 now and I'm ready."
The girl -- named Monique -- laid down a track about her own life ... clearly impressing Mr. Carter in the process.
Monique then proved she's got some serious cojones ... and Jay's reaction is priceless.
Brings Another Fan On Stage
... For Rap Redemption
1/10/2014 8:18 AM PST BY TMZ STAFF
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