He was the winner of the Sabam prize and audience award at the 2nd Concours International de composition pour orchestre de Comines-Warneton in 2003. He won the first prize at the European EBBA competition in 2006 and the third prize and the audience award during the 2009 edition.
Since the 2015 edition of Tomorrowland Official Playlist Houben works as an orchestrator, e.g. reworking the 'Hymn' composed by Hans Zimmer especially for the festival. He also wrote the orchestrations for 'This was Tomorrow', a film on Tomorrowland, performed by the National Orchestra of Belgium at the Sportpaleis (Antwerpen) in November 2015. In March 2017, his first Symphony - commissioned by the City of Peer – was premiered by the National Orchestra of Belgium conducted by Dirk Brossé. Houben is also a renowned conductor, having worked with various professional orchestras and ensembles during recordings and concerts all over the world. He made his symphonic debut conducting Beethoven's 9th Symphony in Prague in 2018. In October 2018, he was musical director, with the symphonic orchestra 'La Passione', of the dance performance ‘Le Temps Perdu’ by top choreographer Isabelle Beernaert in Carré (Amsterdam). Isabelle Beernaert le Temps perdu