green piece | memory maze is a composition by anne wellmer for viola, feedback, laptop and light. The piece explores the acoustic and architectural properties of a performance space, which undergoes a transformation through the enlarged micro-cosmos of the resonating viola strings and the site specific resonances excited by feedback. The title of the piece refers to Les Bains in Brussels, an out-of-use swimming pool building, where the piece was originally conceived.

green piece was commissioned by Q-O2 in Brussels for DoUndo/recycling G, a project that was initiated by Ludo Engels and Julia Eckhardt. It proposed the use of a monochrome viola-sound reservoir to a selected group of composers and sound artists.