James “Johnny Blue” Sullivan is a versatile vocalist and entertainer who brings America’s greatest musical eras to life. As Johnny Blue, he delivers a soulful, high‑energy tribute to Elvis Presley, capturing the King’s spirit with authenticity and heart. Under the spotlight as Mr. S, he shifts into smooth Sinatra mode, honoring the Chairman of the Board with classic swing, charm, and timeless storytelling. James also fronts the powerhouse group Jack Rabbit Slim, blending rock, rhythm & blues, and vintage swagger into a show built for dancing, singing along, and pure good‑time energy.