Robert Mueller was born in 1968 in Vienna. He started to sing at the age of 8 years in the school choir.
After learning to play the keyboard and drums, he discovered his love for bass guitar and singing.
His musical influences were the Beatles, Deep Purple, TOTO, Journey and Europe.
After 5 years as lead singer and song writer with the bands Ampire and Man Groove, he decided to reach for his bass guitar in bands such as Obelix Revenge and Rock Generation.