Helsinki Philharmonic Orchestra covers ‘Sandstorm,’ ‘Opus,’ and more [Video] The Helsinki Philharmonic Orchestra transformed dance music hits like Darude's 'Sandstorm,' Eric Prydz's 'Opus,' and Faithless' 'Insomnia' in 'Classical Trancelations in Concert' performance. Related Posts: Eric Prydz appoints Charles D (USA) to Pryda Presents roster with ‘You’ Eric Prydz officially releases long-awaited ‘NOPUS’ ID