Tango in the context of Contradanza

Partner dances are dances whose basic choreography involves coordinated dancing of two partners. As such it occupies a middle ground between individuals dancing alone or individually in a non-coordinated manner, and groups of people dancing simultaneously in a coordinated manner.

The Río de la Plata (Spanish pronunciation: [ˈri.o ðe la ˈplata] ; lit. 'River of Silver'), also called the River Plate or La Plata River in English, is the estuary formed by the confluence of the Uruguay River and the Paraná River at Punta Gorda. It empties into the Atlantic Ocean and forms a funnel-shaped indentation on the southeastern coastline of South America. Depending on the geographer, the Río de la Plata may be considered a river, an estuary, a gulf, or a marginal sea. If considered a river, it is the widest in the world, with a maximum width of 220 kilometres (140 mi).

The river is about 290 kilometres (180 mi) long and widens from about 2 kilometres (1.2 mi) at its source to about 220 kilometres (140 mi) at its mouth. It forms part of the border between Argentina and Uruguay. The name Río de la Plata is also used to refer to the populations along the estuary, especially the main port cities of Buenos Aires and Montevideo, where Rioplatense Spanish is spoken and tango culture developed. The coasts of the river are the most densely populated areas of Uruguay and Argentina.

Latin music (Portuguese and Spanish: música latina) is a term used by the music industry as a catch-all category for various styles of music from Ibero-America, which encompasses Latin America, Spain, Portugal, and the Latino population in Canada and the United States, as well as music that is sung in either Spanish or Portuguese. It may also include music from other territories where Spanish- and Portuguese-language music is made.

A concertina is a free-reed musical instrument, like the various accordions and the harmonica. It consists of expanding and contracting bellows, with buttons (or keys) usually on both ends, unlike accordion buttons, which are on the front.

The concertina was developed independently in both England and Germany. The English version was invented in 1829 by Sir Charles Wheatstone, while Carl Friedrich Uhlig introduced the German version five years later, in 1834. Various forms of concertina are used for classical music, for the traditional music of Ireland, England, and South Africa, and for tango and polka music.

Yo-Yo Ma (born October 7, 1955) is an American cellist. Born to Chinese parents in Paris, he was regarded as a child prodigy, and began to study the cello with his father at age four. At the age of seven, Ma moved with his family to Boston and later to New York City, where he continued his cello studies at the Juilliard School before pursuing a liberal arts education at Harvard University. He has performed as a soloist with orchestras around the world, recorded more than 92 albums, and received 19 Grammy Awards.

In addition to recordings of the standard classical repertoire, Ma has recorded a wide variety of folk music, such as American bluegrass music, traditional Chinese melodies, the tangos of Argentine composer Astor Piazzolla, and Brazilian music. He has also collaborated with artists from a diverse range of genres, including Bobby McFerrin, Carlos Santana, Chris Botti, Diana Krall, James Taylor, Miley Cyrus, Zakir Hussain, and Sting.