One of the most amazing clarinet concerto pieces ever. The use of the clarinet in this piece is amazing, and the piece in itself is most lyrical and exciting
YouTube - Clariperu: Kari Kriikku in rehearsal
Unfortunately that's the only video of it I could find on youtube, and it doesn't do it any justice at all (despite the player being good, as far as I can read..). But off you go at amazon/itunes and listen to the samples!