Gonzalo Díaz Yerro was born in Madrid and got a degree in Composition (with specialization in Media and Applied Music) at the University of Music and Performing Arts in Vienna. He received his Ph.D. from the University of Las Palmas de Gran Canaria (Spain).

Gonzalo has composed music for cartoon series, features, documentaries, short films, video games, musical theatre, TV-signations, art videos, a toy-robot (Cozmo), music library projects and TV spots (Peugeot, CocaCola, Kellogs, McDonalds, Ford, Anki, etc.).

Currently he is scoring the animated series Cleo&Cuquin (Nick Jr. USA, Clan TVE, Televisa, Discovery Kids, Netflix,…) produced by Ánima España.

As a concert music composer his works (for soloists, chamber music, orchestra, ensemble, choir, concert band, big band, new media, etc.) have been premiered and played in Vienna, Madrid, London, New York, Berlin, Ghent, Zagreb, Tallinn, Las Palmas, San Sebastián, Cuenca, Málaga, Tenerife, Argentina, Brazil, etc.

Since 2017 he heads the Orchestration Services of the Bratislava Symphony Orchestra, and his orchestrations has also been played by the The City of Prague Philharmonic Orchestra and in the Synchron Stage Vienna.

He has been Professor of Composition and Film Scoring at the CSMC (Spain) from 2007 to 2016.

​Since 2016 Gonzalo is living again in Vienna, working as a freelancer.