Cuban music under Castro - truth or propaganda?

I read the following in a review of some Afro-Cuban cds, located here: http://www.houstonpress.com/2007-04-12/ ... cuban-cds/
"In pre-Castro Cuba, musicians were gods. Once Castro came to power, though, God was banished, and musicians, like the rest of the island's deities, were relegated to being just another cog in the revolutionary machine. Suddenly, bandleaders were propagandists, pushing Castro's communist agenda; set-lists were mandated by the country's politicos. Jazz, seen as an American product, was stifled. In one fell swoop, the progression of Afro-Cuban music came to a stop.At least it did on the island. Many of Cuba's best and brightest musicians found ways to leave the country: Arturo Sandoval, Celia Cruz, Willie Chirino, Paquito D'Rivera, Cachao and even a toddler named Gloria Estefan all made their way to America."
Is this the truth, or just propaganda? Or, if it's partially true, then to what degree?
"In pre-Castro Cuba, musicians were gods. Once Castro came to power, though, God was banished, and musicians, like the rest of the island's deities, were relegated to being just another cog in the revolutionary machine. Suddenly, bandleaders were propagandists, pushing Castro's communist agenda; set-lists were mandated by the country's politicos. Jazz, seen as an American product, was stifled. In one fell swoop, the progression of Afro-Cuban music came to a stop.At least it did on the island. Many of Cuba's best and brightest musicians found ways to leave the country: Arturo Sandoval, Celia Cruz, Willie Chirino, Paquito D'Rivera, Cachao and even a toddler named Gloria Estefan all made their way to America."
Is this the truth, or just propaganda? Or, if it's partially true, then to what degree?