**Abstract**

The convergence between the two fields, music and architecture, through structuralism and heuristics is explained by the very principles demonstrated in the evolution of this orientation of ideological, philosophical and artistic nature. The gradual abandonment of the decorative and demonstrative art of the bel-canto of Classicist patterns is akin to the Realism in architecture, more prominent and persistent with the passing of nineteenth century decades. The tension of librettos, with obvious psychological connotations, marked by the expansion of vocality is congruent with rational directions in architecture, which bypass and occult the balanced and symmetrical beauty, suggesting atypical, slightly abstract volumes.

**Keywords:** Architecture, music, heuristic, structuralism, Romanticism, The Romantic Op‐ era, lied, bel-canto, volumes, timbrality
