After some occasional drumming on various items, Clemens (1980) began singing and playing bass in the band of his older brothers (the Feenbrothers) at the age of eleven. Later on, he studied jazz and classical bass at the Conservatories of Amsterdam and Detmold (Germany) and received his Master Degree with honors. After playing with orchestras like the Amsterdam Concertgebouw Orchestra and the Orchestra of the Eighteenth Century, he got back into studying and playing jazz and improvised music. For that reason he lived in New York for a while to take private lessons with Ben Street and John Pattituci, among others.
Clemens co-leads a band called Narcissus, with reedman Robin Verheyen, drummer Flin van Hemmen and pianist Jozef Dumoulin. In 2010 he started the Clemens van der Feen Band, resulting in an album called "High Places" (2011), with as special guest the great Toots Thielemans! Spring 2013 there will be a new Clemens van der Feen Band album released.
Clemens is currently working with groups like the Michael Moore Quartet, Chambertones trio feat. Jesse van Ruller & Joris Roelofs, Harmen Fraanje Trio and Leonardo Grimaudo (LOE). Clemens also performed with the Toots Thielemans 4tet, Tony Malaby, Chris Potter, Eric Vloeimans, Nelson Veras Trio, Karel Boehlee, Rob van Bavel, Dré Pallemaerts 4tet, Nelson Veras trio, Seamus Blake, Gino Vannelli, Tineke Postma, Holland Baroque Society, Rick Margitza, Bill Carrothers, Mark Murphy, John Ruocco and many more.
Clemens has been playing all over the world, from jazz clubs in Paris and Tokyo to the Musikverein in Vienna and Carnegie Hall in New York. Clemens teaches double bass and bass guitar at the Royal Conservatory in The Hague.