Siam Sinfonietta was created in 2010.
Hull Sinfonietta was created in 2004.
Bournemouth Sinfonietta was created in 1968.
Luxembourg Sinfonietta was created in 1999.
Oslo Sinfonietta was created in 1993.
London Sinfonietta was created in 1968.
Basel Sinfonietta was created in 1980.
Stockholm Sinfonietta was created in 1980.
Athelas Sinfonietta Copenhagen was created in 1990.
Hong Kong Sinfonietta was created in 1990.
Siam University was created in 1965.
Siam Shade was created in 1991.
Summer in Siam was created in 1990.