Generalmusikdirector of the Theater Chemnitz (Germany) from the 2017-2018 season and Musical Director of the Teatro de la Zarzuela (Spain) since January 2020,Guillermo García Calvo made his opera debut in Spain in 2011 with the premiere of Tristan and Isolde at the Teatro Campoamor of Oviedo, where he initiated the first release of the Ring des Nibelungen in the city of Oviedo in September 2013. The first opera of Wagner's tetralogy, Das Rheingold, enjoyed an overwhelming success among critics and the public. In December 2009 Guillermo García Calvo conducted the new production of Macbeth at the Vienna State Opera standing in for Daniele Gatti, shortly after having celebrated his debut at the Deutsche Oper Berlin with another new production in May 2009, La Cenerentola.

Guillermo García Calvo has always maintained a strong relation with the Vienna State Opera ever since he started working there in November 2004. He has conducted more than 200 performances at the renowned opera house, interpreting titles such as Macbeth (Première), Rigoletto, La fille du régiment, Lucia di Lammermoor, The Barber of Seville, The Magic Flute, La traviata, L'elisir d'amore, Nabucco, La Sonnambula, Coppélia, The Nutcracker, Onegin, Don Quixote, Giselle, Mayerling, Anna Karenina, Romeo and Juliet and Swan Lake.

Born in Madrid in 1978 Guillermo García Calvo began his musical education at the age of seven. He concluded his musical studies at the University of Music in Vienna with a thesis on Parsifal and a performance of the Overture from Tannhäuser in the Großer Saal at the Musikverein. Between 2001 and 2002 he worked as assistant for Iván Fischer and the Budapest Festival Orchestra and in the summer of 2007 for Christian Thielemann and Der Ring des Nibelungen at the Bayreuther Festspiele. In March 2003 he celebrated his debut as opera conductor with a performance of Hansel and Gretel at the Schlosstheater Schoenbrunn.

As from the 2017-18 season he starts his tenure as musical director (Generalmusikdirektor) of the Theater Chemnitz and the Robert-Schumann-Philharmonie and from January 2020 he is also Musical Director of the Teatro de la Zarzuela de Madrid.

Future engagements include new productions of Un ballo in maschera, Das Rheingold and Die Fledermaus at the opera of Chemnitz, Siegfried at the Teatro Campoamor of Oviedo, Stiffelio at the Festival Verdi in Parma, L'elisir d'amore at the Vienna State Opera and at the New National Theatre Tokyo, Rigoletto at the Deutsche Oper Berlin, a gala concert starring Juan Diego Flórez at the Müpa Budapest, as well as concerts with the Orquesta Sinfónica de Tenerife and Ivo Pogorelich at the Canary Islands Music Festival (Festival de Canarias).

In October 2013 Guillermo García Calvo was awarded the Spanish music prize Codalario as Best Artist 2013.

Chapí's Curro Vargas, staged by Graham Vick and conducted by Maestro García Calvo at the Teatro de la Zarzuela in Madrid in February 2014, was awarded the renowned Premio Campoamor in November 2014.

In May 2017 Guillermo García Calvo received the annual European award “Leonardo da Vinci” supported by ten European Rotary clubs.