Takeda Mari is a director professor of piano at Tokyo College of Music in Tokyo, Japan. She graduated from piano department at Tokyo University of Fine Arts. She has performed with major orchestras such as Warsaw National Philharmonic Orchestra and Japan Shinsei Symphony Orchestra.

Since the year of 1988, she has been giving master classes and lectures about piano teaching methods all over the Japan. She is currently the chief director, the Chairman of The Media Committee, a member of The Executive Committee of Festival, and the Sub Chief of The Piano Teachers Training Committee of PTNA, The Piano Teacher National Association of Japan.

Additionally, she is the Representative of Tokyo Sounds of Forest Station and the Vice President of Miyoshi Net.