Complex sentence: The opera was given concert performances in Los Angeles in 2011 and in London and Birmingham in 2012, and received its first fully staged performances at the Opéra national de Lorraine, Nancy, and the Linbury Studio Theatre, Covent Garden, in 2013.
Split into simpler sentences: The opera was given concert performances in Los Angeles in 2011 and in London and Birmingham in 2012, and received its first fully staged performances at the Opéra national de Lorraine, Nancy. It's first British staged performance took place at the Linbury Studio Theatre, Covent Garden, in 2013.