Imogen Heap/The Hoist Singers

Initial MySpace sensation and Twitter obsessive Heap is almost better known for her Internet savvy than her music, but there's much to admire in the Grammy-nominated (in 2007), electronica-favouring chanteuse's style. Here she teams up with choir THS to perform 'City Songs', a one-hour composition by Eriks Esenvalds with libretto by Aussie poet Emma Jones.