Hi, Would there perchance be somebody here teaching ChucK at the Technical University of Vienna? If so then there is one of your students on our little forum (that I moderate) who believes it's nesicary to do granular pitch-shifting without LiSa. Clearly possible but much harder and more complicated and not so accessible to fresh users. Is that realy what should be done? I'm a bit torn between helping a friendly new user and ruining the dificulty level of homework. see here; http://electro-music.com/forum/viewtopic.php?t=14196 (halfway down the discussion) Sorry to everybody else, I'm sure the Technical University of Vienna is great institute but the website isn't so clear to me, otherwise I would've gone around the list. Cheers, Kas.