It's not hyperbole to say that Astor Piazzolla is the single most important figure in the history of tango, a towering giant whose shadow looms large over everything that preceded and followed him. Astor Piazzolla's place in Argentina's greatest cultural export is roughly equivalent to that of Duke Ellington in jazz -- the genius composer who took an earthy, sensual, even disreputable folk music and elevated it into a sophisticated form of high art. But even more than Ellington, Astor Piazzolla was also a virtuosic performer with a near-unparalleled mastery of his chosen instrument, the bandoneon, a large button accordion noted for its unwieldy size and difficult fingering system. In Astor Piazzolla's hands, tango was no longer strictly a dance music; his compositions borrowed from jazz and classical forms, creating a whole new harmonic and rhythmic vocabulary made for the concert hall more than the ballroom (which was dubbed "nuevo tango"). Some of his devices could be downright experimental -- he wasn't afraid of dissonance or abrupt shifts in tempo and meter, and he often composed segmented pieces with hugely contrasting moods that interrupted the normal flow and demanded the audience's concentration. The complexity and ambition of Astor Piazzolla's oeuvre brought him enormous international acclaim, particularly in Europe and Latin America, but it also earned him the lasting enmity of many tango purists, who attacked him mercilessly for his supposed abandonment of tradition (and even helped drive him out of the country for several years). But Astor Piazzolla always stuck to his guns, and remained tango's foremost emissary to the world at large up until his death in 1992.

Astor Piazzolla was born in Mar del Plata, Argentina, on March 11, 1921. His parents were poor Italian immigrants who moved to New York City in 1924, affording the young Astor Piazzolla extensive exposure to jazz artists like Duke Ellington and Cab Calloway. His father also played tango records by the early masters, especially the legendary vocalist/composer Carlos Gardel, and gave Astor a bandoneon for his ninth birthday. In addition to lessons on that instrument (which encompassed American music, like George Gershwin, as well as tango), Astor Piazzolla also studied with classical pianist Bela Wilda in 1933, becoming an ardent fan of Johann Sebastian Bach and Sergei Rachmaninoff. Around the same time, the budding prodigy met and played with Carlos Gardel, appearing as a newspaper boy in Carlos Gardel's watershed tango film El Dia que Me Quieras. The teenaged Astor Piazzolla turned down an offer to tour South America with Carlos Gardel in 1935, a fortuitous decision that kept him out of the tragic plane crash that claimed Carlos Gardel's life.

In 1936, Astor Piazzolla's family returned to Mar del Plata, and his passion for tango music was fired anew by violinist Elvino Vardaro's sextet. The still-teenaged Astor Piazzolla moved to Buenos Aires in 1938, seeking work as a musician. After about a year of dues-paying, he caught on with the widely renowned Anibal Troilo orchestra, where he spent several high-profile years. In the meantime, he continued his study of piano and music theory, counting future classical composer Alberto Ginastera (1941) and pianist Raul Spivak (1943) as his teachers. He began composing for Troilo during this period, although his more ambitious, classically influenced pieces were often edited for accessibility's sake. In 1944, Astor Piazzolla left Troilo's group to become the orchestra leader behind singer Francisco Fiorentino; two years later, he formed his own group, playing mostly traditional tangos, yet already with hints of modernism. This group broke up in 1949, and Astor Piazzolla, unsure of his musical direction, sought a way to leave tango behind for more refined pursuits. He studied Maurice Ravel, Béla Bartók, and Igor Stravinsky, also immersing himself in American jazz, and worked mostly on his compositional skills for a few years. His 1953 piece "Buenos Aires" caused a stir for its use of bandoneon in a classical orchestral setting.

In 1954, Astor Piazzolla won a scholarship to study in Paris with the hugely influential Nadia Boulanger, who also taught Aaron Copland, Philip Glass, and Quincy Jones, among many others. Boulanger encouraged Astor Piazzolla not to ignore tango, but to reinvigorate the form with his jazz and classical training. Astor Piazzolla returned home in 1955 and immediately set the tango world on its ear, forming an octet that played tango as self-contained world music, rather than accompaniment for vocalists or dancers. The howls of protest from traditionalists continued unabated until 1958, when Astor Piazzolla disbanded the group and went to New York City; there he worked as an arranger and experimented with a fusion of jazz and tango, also composing the famed "Adios Nonino," a lovely ode to his recently departed father.

Returning to Buenos Aires in 1960, Astor Piazzolla formed his first quintet, the Quinteto Tango Nuevo, which would become the primary vehicle for his forward-looking vision. Over the course of the '60s, Astor Piazzolla would refine and experiment heavily, pushing the formal structure of tango to its breaking point. In 1965, he made a record of his concert at New York's Philharmonic Hall, and also cut an album of poems by Jorge Luis Borges set to music. In 1967, Astor Piazzolla struck a deal with poet Horacio Ferrer to collaborate exclusively with each other, resulting in the groundbreaking so-called "operita" Maria de Buenos Aires, which was premiered by singer Amelita Baltar in 1968 (she would later become Astor Piazzolla's second wife). Astor Piazzolla and Ferrer next collaborated on a series of "tango-canciones" (tango songs) which produced his first genuine commercial hit, "Balada Para un Loco" ("Ballad of a Madman"). In addition to composing songs and more elaborate pieces for orchestra (such as 1970's "El Pueblo Joven"), Astor Piazzolla also flexed his muscles scoring numerous films of the period.

The '70s started out well for Astor Piazzolla, as an acclaimed European tour brought the opportunity to form a nine-piece group to play his music in especially lush fashion. However, all was not well. Argentina's government was taken over by a conservative military faction, and everything that Astor Piazzolla symbolized -- modern refinement, an ostensible lack of respect for tradition -- suddenly became politically unwelcome. In 1973, Astor Piazzolla suffered a heart attack, and after recovering, he decided that, with sentiments running high against him, it would be wiser for him to live in Italy. There he formed a group called the Conjunto Electronico, which placed bandoneon at the forefront of what was essentially, instrumentation-wise, an electric jazz ensemble; this period also produced one of his most celebrated compositions, "Libertango." In 1974, Astor Piazzolla cut an album with jazz baritone saxophonist Gerry Mulligan called A Summit Borderline/A Drop Oceanic, with backing by Italian musicians; the following year, he found a new favorite vocal interpreter in Jose Angel Trelles. 1976 brought a major concert back in Buenos Aires, with the Conjunto Electronico premiering the piece "500 Motivaciones."

Tiring of electric music, Astor Piazzolla formed a new quintet in 1978 and toured extensively all over the world, also composing new chamber and symphonic works in the meantime. His reputation grew steadily, making him a prime candidate for exposure in the U.S. during the world-music craze of the latter half of the '80s. In 1986, Astor Piazzolla entered the studio with his quintet and American producer Kip Hanrahan and recorded what he considered the finest album of his career, Tango: Zero Hour. The same year, he played the Montreux Jazz Festival with vibraphonist Gary Burton, resulting in the live set "Suite for Vibraphone and New Tango Quintet". The official follow-up to Tango: Zero Hour, The Rough Dancer and the Cyclical Night (Tango Apasionado), won equally glowing reviews, and Astor Piazzolla staged a major homecoming concert in New York's Central Park in 1987.

Unfortunately, at the height of his international fame (and belated celebration at home), Astor Piazzolla's health began to fail him. He underwent quadruple bypass surgery in 1988, but recovered well enough to mount an international tour in 1989, including what would be his final concert in Argentina. La Camorra, another excellent recording, was released in 1989, the same year Astor Piazzolla formed a new sextet with an unheard-of two bandoneons. In 1990, he recorded a short album with modern-classical iconoclasts Kronos Quartet, titled Five Tango Sensations. Sadly, not long afterward, Astor Piazzolla suffered a stroke that left him unable to perform or compose. Almost two years later, on July 4, 1992, he died in his beloved Buenos Aires due to the lingering after-effects, leaving behind a monumental legacy as one of South America's greatest musical figures ever, and a major composer of the 20th century. ~ Steve Huey, Rovi