The music of Anders Hillborg’s virtuosic Tampere Raw for clarinet and piano alternates between two vividly different characters: one slowly flowing texture composed completely intuitively and one fast fiercely rhythmical and pulsative texture where the tone material for the most part is generated from permutations of prime-number series. A thrilling addition to the repertoire this 7-minute work was commissioned by the Swedish Royal Academy of Music in 1991 for Swedish musicians Martin Fröst and Roland Pöntinen who later recorded it on BIS records.