Yoko Shimomura has been composing in the video game music industry since the late 1980s. Early on, she was a recurring composer for Capcom (and was part of their in-house jazz band Alph Lyla), and then for Squaresoft, and more recently a freelance composer. More recently, she is probably best known for composing the music for the Kingdom Hearts series, as well as Mario RPG music, starting with Super Mario RPG (while at Squaresoft) and the entire Mario & Luigi series since.Contrary to popular belief, Shimomura did not compose Mega Man 6.
Live A Live (1994): Her first game for Square Soft. Breath of Fire before was published in North America by Square Soft, but she composed that for Capcom who developed it.
Xenoblade (2010, along with ACE+, Manami Kiyota and Yasunori Mitsuda): Composed most of the music. Yasunori Mitsuda returned only to compose the ending song, but Yoko Shimomura borrowed some of his signature style associated with past Xeno soundtracks. And, since Xenoblade is far more of a Planetary Romance than previous Xeno games, her compositions also bear Chrono Cross influence.