During and after winning numerous prizes, including the 1st prize at the 12th Japan classical music competition and the 3rd prize at the 53th ARD International music competition, Akasaka has performed as a soloist and chamber musician worldwide.
As a soloist she has appeared with the Orchester included the Bayerischen Rundfunks, the Muenchener Kammerorchester, the Orchestre de chamber de Genève, the Camerata Baltica, the Venezuela Symphony Orchestra, the Protzheimer Kammerorchester, and the Japan Symphony orchestra under the baton of conductors like Seiji Ozawa, Johannes Kalitzke, Raman Kofman, Kazuki Yamada, Günther Herbig amongst others.

The series of Recitals in Geneva and Tokyo has been broadcasted by Swiss Romande, and NHK- TV.

Her artistic partnerships as a chamber musician include work with include Mstislav Rostropovich, Daniel Hope, Gidon Kremer, Philippe Jarousky, Micha Meisky, Patricia Kopatcinskaja, Ebéne Quartet, Jerusalem Quartet, Kuss Quartet, at international music festivals such as Salzburg Festival, Lockenhaus Festival, Bad-Kissingen sommer, Mecklenburg Vorpommern, BBC Proms, Saito-Kinen Festival, Pablo Casals Festival, Luzern and Verbier Festival, Kronberg Festival, Rio de Janeiro Festival, San Francisco Musical days, Schubertiade, etc. Tomoko Akasaka has performed at concert venues include the Amsterdam Concertgebouw,
Konzerthaus and Philharmonie Berlin, Elbphilharmonie in Hamburg, Royal Albert hall and Wigmore hall in London, Vienna Konzerthaus, Zurich Tonhalle, Suntory Hall in Tokyo, Schloss Nymphenburg Munich, Shanghai Grand Theater, and National Centre for the performing arts in Beijing, Geneva Victoria Hall. Tomoko Akasaka studied with Nobuko Imai for whom she worked for as an assistant professor at the Geneva conservatory of music.

In addition Ms. Akasaka worked as a guest professor at the conservatory of Neuchâtel. She holds a position of Viola professor at the Münster Musikhochschule and Substitute Professor at the Hochschule für Musik und Theater in Leipzig.