Mariah Carey to play Sandy relief

Mariah Carey is using her killer vocal chops for good.

The ex-“American Idol” judge is slated to perform at the MLB All-Star Charity Concert, benefiting Superstorm Sandy relief, on July 13 at Central Park, MLB announced Monday. Carey will appear with the New York Philharmonic.

Tickets are free (MLB is making a $1-million donation to Sandy relief) starting Wednesday by visiting allstargame.com/concert.