Duo for bassoon (or violoncello) and double bass was premiered at Teppo-Fest (Wells Cathedral School, Somerset) on Sunday 22 May 2011 by Mollie Stallard (bassoon) and Robin Stallard (double bass). Composed for this talented brother and sister, an extended one-movement work offers effective musical and technical challenges in equal measure. There are opportunities for each instrument to perform as both soloist and accompanist, alongside effective solo cadenzas, and Duo is a work of great invention and atmosphere which is typical of the music by this unique Finnish composer. An amazing wealth of sounds and tone colours are used, exploiting many tonal and timbral landscapes, and it would be ideal for the intermediate duo. The double bass part remains in bass clef throughout. If played by cello instead of bassoon the cellist should play one octave higher from the last note of bar 252 to the end of bar 254.