The Wandelweiser Group is an international group of composers/performers. It was founded in 1992 by Dutch-born flautist Antoine Beuger and German violinist Burkhard Schlothauer. In 1993 Swiss clarinetist Jürg Frey was invited to join, followed by American guitarist Michael Pisaro, Swiss pianist Manfred Werder, then Austrian trombonist Radu Malfatti the following year, then American trombonist Craig Shepard, and others. The group runs its own publishing operation, Edition Wandelweiser, and its own record label Wandelweiser Records.
The music of the Wandelweiser collective is characterized by sparse, quiet, fragile soundscapes incorporating frequent silences. According to Radu Malfatti, Wandelweiser music is about "the evaluation and integration of silence(s) rather than an ongoing carpet of never-ending sounds." Michael Pisaro suggests that Wandelweiser works, which often involve extended durations of hours or longer, offer an alternative relationship to time; these pieces "become not a duration to mark, but a space to occupy".