Blake Shelton's 'Healing In The Heartland: Relief Benefit Concert' continues to grow. Miranda Lambert, who is helping rescue animals lost in the tornado, Vince Gill and Reba McEntire are all taking part.  Just added to the line-up: Luke Bryan, Darius Rucker, Rascal Flatts, Carrie Underwood and Blake's fellow 'Voice' coach Usher.

Tickets for the concert at Oklahoma City's Chesapeake Arena sold out in just 30 seconds.  But you can heart the concert to benefit victims of the Oklahoma tornadoes, as we broadcast it live on Big Frog 104 tomorrow night (Mary 29th), beginning at 9.

You can help by making a $10 donation. Just text REDCROSS to 90999, or call 1-800-REDCROSS.

This isn't the first time Shelton has reached out to those in the wake of tragedy in Oklahoma. In 2011, Shelton and long-time friend Reba went back home to Oklahoma to host the "Tornado Relief Concerts" for victims affected by the Atoka County tornadoes. The two-sold out concerts, which featured special guests and over two hours of entertainment, raised $500,000 for the Oklahoma victims.