In performances, publications and installations, Hecker deals with specific compositional developments of post-war modernity, electro-acoustic music as well as other, non-musical disciplines.
Some of the group exhibitions and projects Hecker has participated in include Push and Pull, MUMOK, Vienna, 2010; Evento, Bordeaux, Thyssen-Bornemisza Art Contemporary, The Kaleidoscopic Eye, Mori Art Museum, Tokyo, UBS Openings: Saturday Live: Characters, Figures and Signs, Tate Modern, London and his most recent collaboration with Cerith Wyn Evans, No night No day, was premiered at the Teatro Goldoni as part of Fare Mondi, 53rd Venice Biennale, all in 2009.
Amongst many other places, he presented his work at Les Spectacles vivants, Centre Georges Pompidou, Paris, 2012; MIT Saarinen Chapel, Cambridge, MA; Lampo, Graham Foundation, Chicago; Push & Pull, Tate Modern, all 2011, Life is Live # 2: listen with pain!, Hebbel am Ufer, Berlin, 2010; Sound out of line, Urbanomic Studio, Falmouth; Comme des Garçons Homme Plus, Palais de la Bourse, Paris, 2009; Utopia of Sound, Akademie der Bildenden Künste, Vienna, 2008; Bridge the Gap?4, CCA, Kitakyushu and Shanghai; Cut and Splice, ICA, London, both 2006.
CCA, Kitakyushu; Ars Electronica, Brucknerhaus, Linz; All Tomorrows Parties, Chamber Sands; Sonic Light (Sonic Acts Festival) Amsterdam in 2003. büro 44, Purple Institute, Paris; Número Festival, Lisbon; International Triennale of Contemporary Art, Yokohama, Japan; Nesh, Electrowerkz, London; LoveBytes, Sheffield all in 2001. büro 30, Spiral Hall / CAY, Tokyo; Sónar, MACBA, Barcelona; Synthèse 2000, IMEB, Bourges; Avanto, Kiasma, Museum of Contemporary Art, Helsinki; Wien Modern, Konzerthaus, Vienna in 2000.
In 2009 he collaborated on a series of performances with Aphex Twin, including amongst others Sacrum Profanum, Kraków; Warp20, Cité de la Musique, Paris and Bloc Weekend, Minehead.