Push! is a one-act opera, with a libretto and music by British composer Howard Moody, born in Salisbury in 1964. The work tells the story of the escape from the Holocaust of 12-year-old Belgian boy Simon Gronowski, who fled from a train on April 19, 1943. The title refers to the central theme of the opera, as Simon was pushed off the train by his mother, who died three days later in Auschwitz.

Initially commissioned by Battle Festival de Bexhill (United Kingdom) in co-production with Glyndebourne in 2016, Push! has been performed five more times: at the Salisbury International Arts Festival and Chichester Cathedral (United Kingdom) in 2018, at the House of Commons de Londres and La Monnaie de Brussel·les in 2019, and at the Ringsaker Opera (Norway) in June 2024.

Alongside the three solo voices, there will be a choir made up of around forty children and young people from the city’s Conservatory and the Ferran Casablancas Institute, a small professional choir—playing the role of guards—a choir of about eighty adult singers drawn from various choral groups in the city (the Coral Belles Arts de Sabadell, the Els Notes choir, and the Ohana Choir from the Music Conservatory), and sixteen professional musicians from the Orquestra Simfònica del Vallès.