Abstract A 49-year-old male-to-female transsexual was administered voice therapy following surgery. Tape recordings were made of her speech prior to and each week during therapy. Selected sentences from these recordings were analyzed. Results indicate that changes in both fundamental frequency and perceptual judgments of femininity were statistically significant and supportive to the client. The voice of the client was still discernible from that of a female speaker, although less so than before therapy. It is suggested that a composite treatment program combined with laryngeal modification through surgical intervention may be necessary.