Tony Romo should keep his day job.

The Dallas Cowboys quarterback sang (or tried to sing) "Take Me Out To the Ball Game" during a Chicago Cubs game on Sunday.

Romo – who had already been booed when he threw out the first pitch – did not further his cause after he invited the crowd at Wrigley Field to sing along. "All right, Chicago. Let me hear ya," he said before belting out the tune.

But his painful, off-key rendition of the old classic left the crowd hoping that Romo, 28, leaves all future singing gigs to girlfriend Jessica Simpson, who wasn't at the game this weekend.

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