Doctor Who Unreleased Music: The Skasis Paradigm (School Reunion)

Here's the theme used for the Skasis Paradigm/the Krillitanes in the Series Two episode School Reunion. This is one of my personal favourites, and I've no idea why it has never seen an official release - though no other 'sampled'/non-orchestral tracks have had a proper release either, so that's probably something to do with it. Music by Murray Gold.