Born in the drought-scorched Northeast of Brazil and forged in the depths of the Amazon rainforest, Florêncio Siqueira de Carvalho became one of the most beloved spiritual figures in the history of the União do Vegetal, a Brazilian religious tradition centered on peace, love, and the sacred tea known as Hoasca. The Song of the Sabiá is the extraordinary biography of Mestre Florêncio, tracing his journey from poverty and survival as a rubber tapper in the Amazonian seringais to becoming a tireless disciple and messenger of Mestre Gabriel, the founder of the União do Vegetal. Along the way, readers encounter a man of deep integrity, contagious joy, and rare spiritual gifts — one who, with a simple cassette recorder, preserved some of the most precious oral records of his Mestre's teachings. Drawing on decades of interviews, family testimonies, and archival research, author Edson Lodi brings to life a hidden chapter of Brazil's spiritual and social history. A soul whose song, like the sabiá bird's, rang out across forests, rivers, and generations.