Obdulio Morales Ríos was born in Havana on April 7, 1910. He learned piano from an American teacher and furthered his studies at the conservatory. At age 12 he began to play piano at the silent cinema, and a year later he was playing in private dance parties as a reserve pianist. Around the same time, while working as an apprentice for his father, who was a tailor, he began to attend black societies such as the Club Bohemio. In 1924 he joined the first lineup of Los Hermanos Martínez orchestra.