André Geiger, from São Paulo, is Doublebass teacher of UNIRIO, Federal University of Rio de Janeiro State. Performed as Double Bass Soloist with the Brazilian Symphony Orchestra, Ouro Preto Orchestra,  Assistant Soloist with the Filarmônica de Minas Gerais and Barcelona Symphony Orchestra/National of Catalonia. He also worked at the Mannheim Opera (Nationaltheater Orchester), in Germany. As a guest musician, he has performed with the Mahler Chamber Orchestra, Orchester de la Suisse Romande, Sinfônica da Galícia, Luzern Festival Orchestra.

André began his bass studies with Gerson Frutuoso at Sesc in São Paulo, and continued his studies with Max Ebert Filho at the Municipal School of Music in São Paulo. He later received instruction from Valerie Albright, Sérgio de Oliveira and Claudio Torezan. As a Vitae Foundation Scholar, he was a student of Rainer Zepperitz at the University of the Arts in Berlin, Germany, where he continued his studies with Christoph Schmidt at the Mannheim School of Music and Performing Arts.

He perfected with Franco Petracchi at the Conservatory of Music in Geneva, Switzerland. He created and promoted some chamber music groups in Brazil, Germany, Spain and Switzerland. He has recorded CDs for Deutsche Grammophon, Naxos and Harmonia Mundi.

He created the authorial soundtrack for the video Installation “Travelling“ by Samir Abujamra and the authorial soundtrack for the Documentary “O Deserto do Deserto“ by Samir Abujamra and Tito Gonzalez. In February 2022 he defended his Master's thesis at the Federal University of Bahia under the guidance of Prof. doctor Lucas Robatto with the theme:  Metronome and metronome applications: New Perspectives in Musical Practice  along with a method of studying with a metronome in 6 lessons. In March 2023 he released his first solo album “Routine“ with works by J.S. Bach and original music.

He has worked with 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, John Neschling, Roberto Minczuk and Fábio Mechetti.