Concert voor violen [2], altviool, cello en orkest, "Three places of enlightenment"

Concerto for violins [2], viola, cello and orchestra, "Three places of enlightenment"

Konzert für Violinen [2], Bratsche, Cello und Orchester, "Three places of enlightenment"

Concerto pour violons [2], alto, violoncelle et orchestre, "Three places of enlightenment"