Barbra Streisand has been at the top almost from the first moment she sang professionally more than 30 years ago.As Anne Edwards reveals she had a, difficult childhood,her father dying when she was two and her mother remarrying a man Streisand disliked.She wanted to be an actress,but on discovering her voice had perfect pitch,she concentrated on singing.Her fame was ensured when she played the lead in only her second Broadway show.