Mick Hartley

It's not often you hear such a powerful coloratura soprano voice outside of opera. Here's the Cuban singer Xiomara Alfaro performing  on "La Gran Revista del Jueves", a Venezuelan TV show from, I think, 1960:

Her Wiki entry is brief:

Xiomara Alfaro (born May 11, 1930 in Havana) is a Cuban coloratura soprano. Her interpretation of Cuban composer and pianist Ernesto Lecuona's Siboney was the composer's favorite. She was a star of the Cuban music scene of the 1950s. She became famous as a singer of bolero music in part due to the way she sang them with her soprano voice. She was known as El Ruiseñor de la Cancion (The Nightingale of Music) and as La Alondra de la Cancion (The Lark of Music). She is currently living in Atlanta, GA.

Here's an earlier version: a filmed performance in a Fifties Havana nightclub using a pre-recorded track. Possibly from the 1957 film ¡Olé… Cuba! - which also featured a young Celia Cruz, a singer with a very different vocal style who came to define our idea of what a female Cuban voice should sound like. [See here, in the Fifties, and here, much later.] 

Here's a lovely performance of Siboney from the Buena Vista Social Club pianist Ruben Gonzalez. And the original, from the Lecuona Cuban Boys.