Mitchell has been on Broadway for a while, but this is his first solo CD release. You can also pick up the new concert reading of South Pacific with him and Reba McEntire (they both do a wonderful job: her accent is perfect, her "A Wonderful Guy" and his "This Nearly Was Mine" are great!)
His solo CD is in pre-order at the moment, and iTunes currently only has the South Pacific CD and few other tracks. I'm sure once the solo CD is officially released, iTunes will have a few available for previewing...