Siman is the son of country music pioneer Si Siman, who was also in the talent and music publishing business and was an executive with Crossroads TV Productions, which created the first popular country music program on network television, "Ozark Jubilee". His middle name is in honor of Ralph Foster, Crossroads TV's president and his father's mentor when he was born in Springfield, Missouri. Si Siman is credited with securing record deals for Chet Atkins, Porter Wagoner and Brenda Lee, among others. He also is responsible for securing multiple recordings of "Satisfied Mind," all of which were in the top 10 at country radio at the same time.