Gelegentlich werden spezielle Gäste zu den MONTAGS Konzerten geladen.

Bisherige Alien Visitors waren:

Bugge Wessltoft, Piano & Rhodes, Eivind Aarset, Guitar, Ingrid Lukas, Voc, Philipp Schaufelberger, Guitar, Nils Wogram, Posaune, String Trio Zéphyr, Malcolm Braff Trio, Sha's Feckel, SONAR, Dans Les Arbres, Samuel Rohrer, Drums, Claudio Puntin, Clarinets, Fredrik Gille, Percussion, Trygve Seim, Sax, Michael Wipf, Percussion, Christoph Stiefel, Keys, Jazkaran Singh, Percussion, Asita Hammidi, Harp, Sujay Bobade, Bansuri Flute, Raguvendra Kalkumi, Tabla, Julian Sartorius, Drums, Thomas Tavano, Bass, Mik Keusen, Piano, Jonas Tauber, Isa Wiss, Voc, Kontrabass, Sha's Banryu, Arte Quartett, Ensemble für Neue Musik Zürich