On Season 25–26, Christoph Grab’s SHAPE & FORM ensemble sculpts music that breathes, born of motifs and intervals and full of sudden changes. Without fixed chords, a linear, wandering harmony carries collective improvisation: alto and tenor saxophones (Christoph Grab), trumpet (Lina Allemano), piano (Matthieu Mazué), double bass (Christian Weber) and drums (Dieter Ulrich). Between jazz, contemporary-classical colours and pulsating rhythms, the group builds a dense, open sound space where structure and spontaneity evolve in equal measure.