(CNN/CBS) - Blake Shelton welcomed a packed crowd to the Chesapeake Energy Arena in Oklahoma City Wednesday night for Healing in the Heartland. "I'm here with some of my closest friends from Oklahoma and beyond to join in and help with rebuilding and recovery of this land that means so much to me," said Blake Shelton. Musicians from all genres were on hand to raise money for the nearby communities impacted by this month's tornadoes and lift a few spirits. Performers said they were happy to lend their voices to the cause. Proceeds will go to the United Way of Central Oklahoma May Tornadoes Relief Fund.