Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Harold Hall ("Hal") Robinson (born July 29, 1952) is an American classical double bass player. He is currently the principal bassist of the Philadelphia Orchestra. Robinson was born in Houston, Texas, the son of Keith Robinson and Dorothe Fowler. Both parents were members of the Houston Symphony Orchestra: his father was the principal bassist, and his mother was a violinist. Hal and all four of his siblings cellists Sharon and Keith, Jr., and violinists Erica and Kim became professional string players with notable careers.