[2] His family was part of the Spanish nobility, and his mother was the cousin of Agustín Fernando Muñoz y Sánchez, 1st Duke of Riánsares who married Queen Maria Christina of the Two Sicilies.
[2] He worked for future Spanish Prime Minister Práxedes Mateo Sagasta[3] who was an editor of the newspaper La Iberia,[4] and the two men developed a close friendship.
[3] He then trained as an opera singer and performed as a leading tenor at the Théâtre italien de Paris [fr]; drawing acclaim on the European stage.
[2][3] Belari then studied medicine and after completing his medical degree used his knowledge of human biology and singing to become a celebrated voice teacher and writer on vocal pedagogy.
[3] The Musical Courier obituary did not claim the event was a suicide stating instead that friends of Belari considered the fall "an accident" and "a mystery".