By Brandy McDonnellToday's featured event:The Flatlanders - Joe Ely, Jimmie Dale Gilmore and Butch Hancock, who are three of Texas' most respected singer-songwriters, return to Oklahoma City in concert at 8 tonight at the Tower Theatre, 425 NW 23.The Flatlanders, known for their poetic lyrics and superior musicianship, were an insider's secret during the golden era of Austin, Texas music, when they recorded one album together, which came out only on eight-track back in 1973.Read more on NewsOK.com