You hear that beat on ‘Querido Río?’ It’s a subtle, almost swishing sound that appears, disappears, then beats steady as Balvin sings, not raps, building to an emotional chorus that’s a major departure for a reggaetón icon. J Balvin’s 24-track new album, Jose, ‘Querido Río (Dear Rio)’ is a letter from Balvin to his then-unborn son Rio; the beat is Río’s heartbeat, recorded during an ultrasound. José Álvaro Osorio Balvín, better known as J Balvin, is a Colombian singer. He has been referred to as the ‘Prince of Reggaeton’, and is one of the best-selling Latin music artists with sales of more than 35 million records worldwide. Balvin was born in Medellín, Colombia.