São Paulo-born André Geiger has performed for several years as Principal Double Bass in the Brazilian Symphony Orchestra and as Assistant in the Barcelona Symphony and Catalonia National Orchestra. He has also performed at the Mannheim Opera (Nationaltheater-Orchester) in Germany. As a guest musician, he appeared with renowned orchestras such as the Mahler Chamber, Suisse Romande, Galicia Symphony, Lucerne Festival, Osesp, among others.

He started his bass studies with Max Ebert Filho at the São Paulo Municipal School of Music. Subsequently, he was tutored by Valerie Albright, Sérgio de Oliveira and Claudio Torezan. With a scholarship from the Vitae Foundation, he was a student of Rainer Zepperitz at the Berlin University of the Arts, Germany, country where he continued his studies with Christoph Schmidt at the Mannheim University of Music and Performing Arts. He has also been a student of Franco Petracchi at the Geneva Conservatory of Music in Switzerland.

Throughout his career, he has worked with prominent conductors such as Claudio Abbado, Mariss Jansons, Kurt Masur, Lorin Maazel, Daniel Harding, Ádám Fischer, Leonard Slatkin, Eiji Oue, Marek Janowski, Semyon Bychkov and Jesús López Cobos.

André has been teaching at the Neojiba String Academy in Salvador since 2010.