Music awards shows, from MTV’s concoctions up to and including the Grammys, are much more about the live performances than the actual awards. This CMT home-grown country music awards show is no exception, and lures more than enough talent each year to make it worth tuning in to sample. Tonight, for example, the live show is scheduled to include a duet with Miranda Lambert and Carrie Underwood, performing “Somethin’ Bad.” Expect somethin’ good.