A 501(c)(3) organization is a type of non-profit organization in the United States that is exempt from federal income tax.

Astor Piazzolla was an Argentine composer and bandoneón player who revolutionized traditional tango music, turning it into a unique and innovative style known as "nuevo tango.

Freedom of speech is a fundamental human right that allows individuals to express their opinions, ideas, thoughts, beliefs, and perspectives without fear of retaliation, censorship, or punishment from the government or other authorities.

Human rights are the basic rights and freedoms to which all individuals are entitled, regardless of nationality, race, gender, religion, or any other status.

Leonard Bernstein was an American composer, conductor, and music educator.

Martha Argerich is an Argentine pianist widely regarded as one of the greatest pianists of all time.

Olivier Messiaen was a French composer, organist, and ornithologist.

Pyotr Ilyich Tchaikovsky was a renowned Russian composer of the 19th century.