Chronicle: Songwriter/musician Mark Selby died yesterday (9/18) after battling cancer. Among Selby's cuts are "There's Your Trouble" by the Dixie Chicks, with other country artists including Wynonna, Trisha Yearwood, Lee Roy Parnell and Jo Dee Messina recording his songs. "This is tough for the whole songwriter community," NSAI Exec. Dir. Bart Herbison tells Country Aircheck. "I've never seen anybody go through this sort of challenge with more dignity and a better attitude than Mark."