Tickets for Old Crow Medicine Show, a band that has opened for Dolly Parton at the Grand Ole Opry, toured with Merle Haggard and appears regularly on “A Prairie Home Companion,” go on sale at 10 a.m. today. The Felice Brothers will be special guests for the concert, which starts at 8 p.m. Saturday, Feb. 7, at the Tivoli Theatre. Originally from New York State and now living in Nashville, members of Old Crow Medicine Show play American roots music with a rock ’n’ roll attitude. All seats are reserved at $20 and $28, plus convenience fees. Purchase tickets at the Memorial Auditorium box office, 399 McCallie Ave., online at www.ChattanoogaOnStage.com or by phone at 642-TIXS.