Ferdinand Sarnitz (born December 17, 1988), known by his stage name Left Boy is an Austrian rapper, singer and producer from Vienna, Austria.
Sarnitz was born on December 17, 1988 in Vienna, Austria to Austrian musician André Heller and Sabrina Sarnitz. At the age of 18, Sarnitz went to New York City to study audio engineering at the Institute of Audio Research for a year. After living in his hometown Vienna for a short while, he decided to move to Brooklyn to live in a shared apartment with two directors, a producer and a photographer.
In December 2010, Sarnitz released his first mixtape The Second Coming for free download online.