INDIO,CA – APRIL 25: Musician Miranda Lambert performs onstage during day two of 2015 Stagecoach, California’s Country Music Festival, or at The Empire Polo Club on April 25,2015 in Indio, California. (Photo by Christopher Polk/Getty Images for Stagecoach)
" data-medium-file="https://cbsradionews.files.wordpress.com/2015/04/miranda-3.jpg?w=300" data-large-file="https://cbsradionews.files.wordpress.com/2015/04/miranda-3.jpg?w=420">"serious inflammation of her vocal cords" is being cited as the reason Lambert can't effect her Calgary festival headlining slot.
Source: radio.com