original: He performed on a regular basis for white audiences in the 1900s.
simplifications: He played often for white spectators in the 1900s. He performed regularly for white audiences in the 1900's. He often played for white audiences in the 1900s. He performed regularly for white audiences in the 1900s. He performed on a regular basis. He had white audiences in the 1900s. He performed regularly for white audiences in the 1900's. He performed for white audiences in the 1900s. In the 1900s, he often performed for white audiences. He performed frequently for white audiences in the 1900s. He performed on a regularly for white viewers in the 1900s.