The Unseen Stream is a progressive classical album by Troy Donockley.

His main instrument is the Uilleann Pipes adding also Low Whistles, Electric and Acoustic Guitars, Keys, Cittern, and Mandolin, and he has composed most of the tracks.

Although a solo recording he includes guests Irish fiddler Nollaig Casey, piano player Neil Drinkwater, his Iona colleagues Joanne Hogg (voice), Terl Bryant (percussion) and Tim Harries (bass), the Emperor String Quartet and Duncan Rayson on the Rochdale Town Hall Organ.

The piece draws on Irish Orchestral works, folk, rock, jazz, Scandinavian symphonies, and New Age stylistically.

The music is mostly expressions of Troy's experience, particularly inspired by natural beauty of the coast.