つんく♂ (Tsunku; つんく), real name Terada Mitsuo (寺田光男), is an extremely prolific Japanese record producer, songwriter, and vocalist. He is best known for having two major roles in the Japanese music landscape: first as the lead singer of the popular rock group Sharam Q, and as the producer, primary songwriter, and main studio backing vocalist for idol supergroup Morning Musume., in addition to Matsuura Aya and other associated artists under the Hello! Project banner, for whom he has written and produced a number of chart-topping hits. He has also produced music for other Japanese artists, including Hamasaki Ayumi when she debuted. His musical influences include The Beatles, Queen, and Onyanko Club.