Kae has worked extensively as a composer and arranger, and has also been active as a pianist/keyboardist, performing in theatrical productions, tribute concerts, studios, and community events across the US and Japan.​

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Perican-tou ga Yattekita / Tinguel Tangle — Jiyu Gekijo (Pianist)

Peer Gynt -(Dir. Yukio Ninagawa)

Dames At Sea — (Off-Broadway musical production Japan Tour )

Keith Emerson Tribute Concert — El Rey Theatre, Los Angeles (Pianist)

Mankind Project — Saban Theatre, Los Angeles (Pianist)

Synthplex: Keith Emerson Tribute Concert (Keyboardist)​and numerous others

Ultimate Jam Night — Whisky a Go Go (Keyboardist)

Cousin Bette — Antaeus Theatre, North Hollywood (Piano Accompanist)

Sonnet — Park La Brea Theatre, Los Angeles (Piano Accompanist)

Lycée Français de Los Angeles Choir — 46th Holiday Celebration, Dorothy Chandler Pavilion, Music Center, Los Angeles (Piano Accompanist)

El Marino Elementary School Choir (Piano Accompanist) ​

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 Beyond her performing and creative work, Kae also teaches piano and  composition to Hollywood and European celebrities, including royal family members and state guests, sharing her artistry and mentorship across borders and generations.