Sioen has released 6 full-albums and toured in Belgium, The Netherlands, Germany, France, Switzerland, Austria, South Africa, China, Malaysia, Indonesia & South Korea.
Sioen's music is much appreciated in Asia. In Indonesia his song 'Cruisin' became a karaoke song and the same song was used for a tv commercial in South Korea, starring famous American actress Gwyneth Paltrow. He played over 40 shows in South Korea. In 2016 he recorded a collaboration album called 'Omniverse', together with 5 other Korean musicians.
Sioen likes to combine different genres to create original compositions: 'singer-songwriting with adventurous arrangements'. He collaborated with Toots Thielemans & Marie Daulne, recorded an album in Johannesburg with South African musicians (Calling up Soweto), collaborated with conductor/composer Dirk Brossé and jazz pianist Jef Neve to compose 'Distortion: a Hymn of Liberty' in remembrance of World War I. In November 2017 they performed together at the United Nations in New York.