"Alan Silva (born Alan Lee da Silva; January 22, 1939 in Bermuda) is an American free jazz double bassist and keyboard player.

Silva was born a British subject to an Azorean/Portuguese mother, Irene da Silva, and a black Bermudian father known only as "Ruby". He emigrated to the United States at the age of five with his mother, eventually acquiring U.S. citizenship by the age of 18 or 19. He adopted the stage name of Alan Silva in his twenties.

Silva was quoted in a Bermudan newspaper in 1988 as saying that although he left the island at a young age, he always considered himself Bermudian. He was raised in the Harlem neighborhood of New York City, where he first began studying the trumpet, and moved on to study the upright bass.

Silva is known as one of the most inventive bass players in jazz and has performed with many in the world of avant-garde jazz, including Cecil Taylor, Sun Ra, Albert Ayler, Sunny Murray, and Archie Shepp.

Silva performed in 1964's October Revolution in Jazz as a pioneer in the free jazz movement, and for Ayler's Live in Greenwich Village album. He has lived mainly in Paris since the early 1970s, where he formed the Celestrial Communication Orchestra, a group dedicated to the performance of free jazz with various instrumental combinations. In the 1990s he picked up the electronic keyboard, declaring that his bass playing no longer surprised him. He has also used the electric violin and electric sarangi on his recordings.

In the 1980s Silva opened a music school I.A.C.P. (Institute for Art, Culture and Perception) in Central Paris, introducing the concept of a Jazz Conservatory patterned after France's traditional conservatories devoted to European classical music epochs.

Since around 2000 he has performed more frequently as a bassist and bandleader, notably at New York City's annual Vision Festivals."

"Burton Greene (born June 14, 1937) is a free jazz pianist born in Chicago, Illinois, though most known for his work in New York City. He has explored a variety of genres, including avant-garde jazz and the Klezmer medium.

Greene rose to popularity during the 1960s on New York's free jazz scene, gigging with well-known musicians which included Alan Silva and Marion Brown, among a host of others. With Alan Silva he formed the Free Form Improvisation Ensemble in 1963. He joined Bill Dixon's and Cecil Taylor's Jazz Composers Guild in 1964, and also played with a number of other artists, including Rashied Ali, Albert Ayler, Gato Barbieri, Byard Lancaster, Sam Rivers, Patty Waters, and others. During this time, he recorded two albums under his own name for ESP-Disk.

He moved to Europe in 1969, first to Paris. Since then he has been living in Amsterdam and played with such Dutch musicians as Maarten Altena and Willem Breuker. During the late 1980s he began exploring the Klezmer tradition in his groups Klezmokum (along with Perry Robinson), Klez-thetics, and a more recent group called Klez-Edge with vocalist Marek Balata. Klez-Edge has a recent recording Ancestors, Mindreles, NaGila Monsters (2008) out on John Zorn's Tzadik label. A duet with Perry Robinson, also on the Tzadik label, Two Voices in the Desert was released in January 2009.

Since the mid-1990s Greene has often performed and recorded in New York and along the East Coast. Greene's recent performance and recorded groups based in New York include a duet with bassist Mark Dresser; a quartet with trumpeter Roy Campbell, Lou Grassi and Adam Lane; a trio with Ed and George Schuller on bass and drums (recorded on the CIMP label); and a quintet with the Schuller brothers, Russ Nolan on saxes and flute and Paul Smoker on trumpet. His autobiography written over 20 years, Memoirs of a Musical Pesty-Mystic, was published in 2001 (Cadence Jazz Books)."