Agustín Barrios Mangoré (1885–1944) was a Paraguayan guitarist and composer who fundamentally expanded the classical guitar repertoire during the early 20th century. Working across three continents, he elevated the instrument from salon accompaniment to concert stage centerpiece, composing works that demand technical virtuosity while celebrating the guitar's lyrical and dramatic possibilities.
Barrios wrote over 100 pieces for solo guitar, many inspired by South American landscapes, indigenous themes, and spiritual reflection. His compositional voice bridged Romantic piano idioms with guitar-specific writing, creating music that feels both intimately personal and architecturally ambitious. Teachers and students value his catalog for its blend of accessibility and artistry; his pieces reward careful interpretation while remaining musically direct.