A Berlin music and artist group around the core Sandy La S. Schwermer, Santrra Oxyd and Georg Peter Koerdt. The core of the group always works with and resonates with different guest musicians on each project, so that the musical direction changes with every performance, with every session. The cast of ``The Call`` is: Sandy La S. Schwermer: harp, Shruti Box and vocals, Santrra Oxyd: vocals, Georg Peter Koerdt: keyboards and Thomas Seyfarth: bass