Further important duos belonging to their repertory are those by Luigi Nono, James Dillon, Olga Neuwirth, Giacinto Scelsi, Roman Haubenstock-Ramati, Jacqueline Fontyn.
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The teachers of the violinists were Max Rostal, Walter Levin and each one of the other members of the LaSalle Quartet, Ricardo Odnoposoff, Gerhart Hetzel, Kurt Sassmannshaus, Ingeborg Scheerer, Josef Grünfarb, Machie Oguri-Kudo and for shorter periods Valery Klimov, Wolfgang Schneiderhan, Pierre d'Archambeau, composition and theory Allen Sapp.
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Duo Gelland also premiered duos by other composers - never performed due to lack of permanent violin duos - by Werner Wolf Glaser, Erika Förare, Oleg Gotskosik, Ture Rangström.
duo | Safri Duo | The Dynamic Duo | Duo LNB | Secret Garden (duo) | Jimmy & Wes: The Dynamic Duo | Antique (duo) | Duo Duo | Benevento/Russo Duo | PowerBook Duo | Nervo (duo) | Grammy Award for Best R&B Performance by a Duo or Group with Vocals | Free Beer (comedic musical duo) | Fame (duo) | duo (music) | Duo Crommelynck | Duo-Art | D'Unbelievables duo, Pat Shortt | Appleton (music duo) |