Walewein Witten studied fortepiano at the Royal Conservatory at The Hague (Nl) with Stanley Hoogland and obtained his Master Diploma in 1999. Throughout his studies he was a well appreciated partner for chamber music and song accompanist.

His desire to extend his repertoire and technical possibilities led him to decide to dedicate himself to the modern piano as well. From 1999 to 2001 he studied piano in Barcelona with Carmen Vila, a former student of Paul Badura-Skoda. He continued his studies at the Academy of Arts in Utrecht with Martijn van den Hoek and Alexander Warenberg, finishing his soloist diploma in 2003.

He participated masterclass for piano and fortepiano with Paul Badura-Skoda (1998) and Alexej Lubimov (2000). Song accompaniment and Lied interpretation he learnt in various masterclasses, with Rudolf Jansen and Elly Ameling (2005), as well as with Aafje Heynis, and Irwin Gage.

On fortepiano and modern piano Walewein Witten ist mostly active as a soloist and chamber musician, in combination with violin and cello, flute, and clarinet, and as a song accompanist. With orchestra he performed several solo concertos, amongst others both the Grieg and Schumann a minor concertos, Beethoven 3^rd concerto in c minor and various Mozart concertos, also conducting from the keyboard.

From 2005 to 2014 Walewein worked as a repetiteur at the opera theaters of Düsseldorf, Bremerhaven and Kassel. During this period he took part in many ballet productions performing solo piano on the stage to dance choreographies, and played many lied and solo recitals, both on modern and fortepiano. From 2018 to 2023 he worked as Head of Music and Assistant to the Chief Conductor Ainars Rubikis at Komische Oper Berlin.

Since 2018, Walewein regularly works together with Sally Sargent, an icon in the world of historical performance practice and of the historic piano in particular. Her direct connection the Piano School of the 19th century (through Marcel Ciampi in Paris), as well as her thorough knowledge of historical keyboard technique through the centuries have led to a remarkable deepening and refinement of his playing.