I am listening to the Opry tonight and Jimmy Dickens is on and he said he was "here against doctor's orders". He did not sing and he sounded awful rough. The band just played a brief instrumental when he came out on stage. Mike Terry did introduce him by telling the audience that it was his 89th birthday today. As he was telling his usual jokes, the voice sounded pretty hoarse and he just sounded tired. He did joke about playing his guitar. He also just said that his doctor told him not to sing and to rest his voice, but that he wanted to be at the Opry for his birthday.
He concluded his segment by doing his recitation of "17", which he has been doing lately on the Opry. They then rolled out a birthday cake and sang Happy Birthday to Jimmy.