Country star Blake Shelton has launched a foul-mouthed rant at a music critic who published an unflattering appraisal of the singer's reality TV show The Voice. Shelton, who is a coach on the American version of the singing contest, became enraged when Houston Chronicle music critic Joey Guerra posted a link to his latest TV blog on his Twitter.com page with the caption, "The Voice sends one singer back to Texas. Don't worry, it's not the one we care about." In the blog, the writer mentioned the elimination of contestant Holly Tucker, insisting her exit took "much too long", and the comments infuriated Shelton, who launched a scathing attack on Guerra. In a series of posts on Twitter.com, the singer writes, "Hey Joey Guerra.. I wonder if the state of Texas is proud of the kind of s**t you write about a young Texan like (Holly Tucker)? I doubt it... It's people like you Joey Guerra that make me sick... Holly is not only a talented singer but a great person that's simply chasing a dream... How about you grow some b**ls and come tell me to my face how terrible some of these kids are face to face...? You won't. Ever... You are a chicken s**t. I can't stand a person that makes a point to write hurtful things about kids just trying their best... How much do y'all wanna bet he'd never criticise my team OR me like that face to face.... Chicken s**t..."