[6] Gwirtzman was born on August 28, 1965, in Tel Aviv, Israel to a ballet dancer and teacher mother and a civil engineer father.

[12][1][13] After the army service, at the age of 23, Gwirtzman started recording on dozens of albums, performing and touring with Israel's top artists such as Ofra Haza, Shlomo Artzi, Matti Caspi, Arik Einstein, Rita and Rami Kleinstein.

At the same time with the band Esta he released 3 albums and performed all over the world, including the White House in Washington DC for U.S. President Bill Clinton (1998) and in Thailand for the Thai royal family (in 2008).

He orchestrates, arranges and builds up textures such as big band sound or symphonic orchestras, all performed by himself using the various acoustic woodwinds.

[29] His live performance has inspired the artist Lewis Achenbach to create a series of his portraits during the Israeli Jazz Festival in Chicago in 2013.