Formed in 2005 by Petr Kotík as the resident chamber orchestra for the biennial Ostrava Days, Ostravská banda consists of young musicians from Europe and U.S. whose primary interest is the performance of new music. Principal conductors are Petr Kotík, Roland Kluttig, Peter Rundel, Ondřej Vrabec, Since 201 Johannes Kalitzke has been cooperating with Ostravská banda. The core instrumentation of 24 payers can change according the requirements of each score. The repertoire include composers of the 20th century: John Cage, Morton Feldman, György Ligeti, Luigi Nono, Edgard Varése, and Iannis Xenakis, among others, and our contemporaries Louis Andriessen, Elliot Carter, Petr Kotík, Alvin Lucier, Tristan Murail, Phill Niblock, Christian Wolff, Salvatore Sciarrino, Wolfgang Rihm, Martin Smolka, Miroslav Srnka, Peter Graham, and Petr Bakla among many young emerging composers. Apart from regular performances at Ostrava Days festivals, Ostravská banda performs and tours at such venues as the Paris Conservatoire, Zankel Hall, Prague Spring Festival, Akademie der Künste in Berlin, Vredenburg in Utrecht, Allice Tuly Hall at Lincoln Centre, and musicadhoy in Madrid, to name just a few. Ostravská banda has been performing as an opera orchestra since 2012 for the biennial NODO Festival (New Opera Days Ostrava). NODO has been established by Ostrava Center for New Music in cooperation with National Moravian-Silesian Theatre.