Isabelle Geffroy (her real name) was born in Tours in 1980.
In 2001, Zaz really gets into music. She began as a variety singer in an orchestra. In 2006, it rose to Paris and performs in the streets, cafes, cabarets and other Parisian venues.
In 2007, she responded to an ad from the producer and songwriter Kerredine Soltani who is looking for a singer with a jazzy and scratchy voice. He produced his first album. Her success came in 2010 when she signed a contract with Sony ATV.

In March 2011, she received the Original song music victory. She has sold more than 4 million records, including 2 million abroad.