On Provença street, almost at the corner with Roger de Llúria, there is a treasure. A Barcelonian treasure that is over a hundred years old. It is the Boileau publishing house, the oldest active music publisher in the State. A whole institution, a benchmark and a guarantee of quality both in the editing and in the dissemination of music for all kinds of audiences. Entering their shop is like taking an authentic leap back in time. Inaugurated in 1939 and designed following the inspiration of the GATCPAC architectural movement, it has been preserved just as it was on the first day.