Alois Posch was born in Wies in Styria in 1959. His musical career began at the age of ten, playing the piano and the violin. Aged 14, he took his first double bass lessons and he was accepted as an extraordinary student at the University of Music and Performing Arts in Graz the following year. During his studies with Johannes Auersperg, Alois Posch made his first solo radio broadcasts, won prizes at several competitions and in 1977 won an audition with the Orchestra of the Vienna State Opera.
From 1983 to 2008 Alois Posch was principal double bass in the Orchestra of the Vienna State Opera and the Vienna Philharmonic. He was a visiting professor at the Mozarteum University in Salzburg, after which Alois Posch was appointed professor at the University of Music and Performing Arts in Vienna, where he has taught since 1993.
Alois Posch has appeared at various international festivals since the start of his career. Recordings made over the last few decades demonstrate his close collaboration with a large number of renowned musicians.
Alois Posch plays a double bass by Johann Joseph Stadlmann from 1779.