The building known the "Townhouse of the Musicians" due to the sgraffito decorations of musical themes that adorn the front wall of the building. The decorations were executed by Stanisław Szczepański in 1954. On the façade there is also an image of Jan of Lublin, the author of the 16th-century tablature – one of the most valuable works of Polish and European music, which constitutes a collection of compositions of Polish, French, Italian and Spanish origin.