since 2005 hecker presented a series of upic diffusion sessions in collaboration with russell haswell, as “haswell & hecker”, performing recordings made exclusively with iannis xenakis graphic input computer music system. amongst many other locations, at "serralves em festa", fundação serralves, porto, 2009; conway hall, london; "patronage of space", lopud; donaufestival, krems; kunsthalle, zürich all in 2007 and cubitt at city university, london, 2005. in 2011, editions mego released "kanal gendyn", a vinyl record and audio only dvd set, documenting a performance of haswell & hecker from 2004 employing exclusively alberto de campo’s supercollider 2 version of xenakis’ gendyn (french for ‘generation dynamique stochastique’ or english ‘dynamic stochastic synthesis’) sound synthesis procedure.