Country singer/songwriter Hunter Hayes and rock group The Who have been booked for the Grammy Nominations Live! concert in Nashville, CBS said. Wednesday\'s show at the Bridgestone Arena will also feature a special tribute to Johnny Cash from The Band Perry and Dierks Bentley, the network announced Thursday. The artists join previously announced performers Luke Bryan, FUN., Maroon 5 and Ne-Yo on the bill for the show. LL Cool J and Taylor Swift are to serve as co-hosts of the one-hour concert special.