Her early teachers were Chikako Satoya, Machie Oguri and Chihiro Kudo, and she worked with Koichiro Harada at the Toho Gakuen School of Music.

[1] Kamio studied in the U.S. with Dorothy DeLay and Masao Kawasaki at the Aspen Music Festival and the pre-college division of the Juilliard School, and with Zakhar Bron at the Zurich University of the Arts.

Kamio was one of three people (along with pianist Adam Neiman and Young Concert Artists manager Susan Wadsworth) who were the subjects of the 2003 documentary film Playing for Real, directed by Josh Aronson.

[2] In 2010, Kamio toured Japan with the Budapest Festival Orchestra under Iván Fischer playing the Mendelssohn Violin Concerto.

She has also collaborated with conductors such as Zubin Mehta, Mstislav Rostropovich, Yehudi Menuhin, Vladimir Ashkenazy, Charles Dutoit, Iván Fischer, François-Xavier Roth, Jiri Belohlavek and Ludovic Morlot.