He has also written music for film, television, video games, exhibitions, advertisements, roller coaster rides, and planetarium dome shows.
His 2009 album Standing in Silence, 2013's Stories from Elsewhere, and 2018's A Quiet Divide step away from his earlier electronica work into more of a shoegaze, post-rock, ambient, chamber music direction.
Eminent US reviewer John Diliberto (host of Echoes) called Stories from Elsewhere "a modern ambient chamber music masterpiece of quietly epic dimensions".
[2] Sheehan's work has featured on a variety of compilations, most notably the multi-platinum selling Cafe del Mar[3] anthologies (vol.
In 2009, Sheehan composed the soundtrack to the British National Space Centre's We Are Astronomers, a 360° fulldome film (narrated by David Tennant).
In July 2012, Japan's Preco Records released Sheehan's most recent albums Standing in Silence and Seven Tales of The North Wind together as a limited-edition double box set that included a remix of the track "Borrowing the Past" by American post-rock ambient group Hammock.
[12] In September 2019, Sheehan travelled to New York with artist Joseph Michael to collaborate on a large-scale audio-visual installation projected on the United Nations building.
The art piece featured an original score by Sheehan and music by Brian Eno, and included the voices of six young climate change activists.