Winner of the Kiefer Hablitzel Göhner Music Prize, Jansen Ryser has extensively performed throughout Europe as well as in the United State. Praised for his musicianship, his playing was described as « combining a natural pianism with a mature musical sensibility and poetic eloquence ».
Invited by numerous festivals, he has performed as soloist and chamber partner, notably at the Gstaad Menuhin Festival, Verbier Festival off, Lavaux Classic Festival, Plovdiv International Chamber Music Festival, Vienna Young Pianist, Art et Musique de Sierre, Festival de la Madeleine, Opera Festival of Montperreux.
Making his debut with orchestra at age 15 on the prestigious stage of the Menuhin Festival in Gstaad, Jansen Ryser has since played with several orchestras: Camerata Armin Jordan (Orchestre de la Suisse Romande), Haute Ecole de Musique de Genève Orchestra, CMgo Orchestra, Amamusique Orchestra. His performance has taken him to prestigious venue such as Victoria Hall in Geneva, Tonhalle in Zürich, Ehrbar Saal in Vienna, Stravinsky Hall in Montreux, Kursaal Casino in Bern among others.
A passionate chamber musician, Jansen Ryser was given « carte blanche » from Art Association for a series of three concerts involving nine musician in Salle Paderewski in Lausanne. These concerts were recorded and broadcasted on the Swiss national radio Espace 2 in the show « Nouveaux Talents » held by Jan Nehring. His long-standing collaboration with the soprano Sophie Negoïta led them to stood out at the Concours International Lili et Nadia Boulanger in Paris.
Over the years, he benefited from the guidance of Paul Badura-Skoda, Ferenc Rados, Eberhard Feltz, Andreas Staier, Nelson Goerner, Lilya Zilberstein, Andrea Bonatta, Jeffrey Swann, Krzysztof Jablonski, Jean-Marc Luisada.
He studied with Matti Raekallio at the Juilliard School in New York thanks to the Theodora J. Nichols Piano Scholarship and at the Haute Ecole de Musique in Geneva with Sylviane Deferne. He is a recipient of the 2017 Leenaards Foundation Scholarship and is supported by the Dénéréaz Foundation.
Currently, he is studying with Claudio Martinez-Mehner at the Hochschule für Musik Basel.