Barcelona's cultural roots go back 2000 years. To a greater extent than the rest of Catalonia, where Catalonia's native Catalan is more dominant, Barcelona is a bilingual city: Catalan and Spanish are both official languages and widely spoken.

The Catalan spoken in Barcelona, Central Catalan, is the one closest to standard Catalan. Since the arrival of democracy, the Catalan culture (very much repressed during the dictatorship) has been promoted, both by recovering works from the past and by stimulating the creation of new works. Barcelona is designated as a world-class city by the Globalization and World Cities Study Group and Network. Barcelona has many venues for live music and theatre, including the world-renowned Gran Teatre del Liceu opera theatre, the Teatre Nacional de Catalunya, the Teatre Lliure and the Palau de la Música Catalana concert hall.

Barcelona also is home to the Sónar Music Festival which takes place around June every year, and to the Barcelona and Catalonia National Symphonic Orchestra (Orquestra Simfònica de Barcelona i Nacional de Catalunya, usually known as OBC) is the largest symphonic orchestra in Catalonia. In 1999, the OBC inaugurated its new venue in the brand-new Auditorium (l'Auditori).

It performs around 75 concerts per season and its current director is Eiji Oue. It has a thriving alternative music scene, with groups such as The Pinker Tones receiving international attention.