A mezzo-soprano is a female singer with a range usually extending from the A below middle C to the F an eleventh above middle C. Mezzo-sopranos generally have a daker vocal tone than sopranos, and their vocal range is between that of a soprano and that of an alto.
... the largest and most populous country in South America. Spanning a vast area between the Andes and the Atlantic Ocean, it borders Uruguay, Argentina, Paraguay, Bolivia, ...