Gunnar Heckscher
Heckscher was born in Djursholm, son of economist Eli Heckscher. He graduated from Uppsala University in 1927 and obtained a PhD 1934. He lectured in political science at Uppsala between 1933 and 1941 and at what later became Stockholm University between 1941 and 1948. He was Dean of the Social Institute of Stockholm 1945-1954. He became a professor in 1948 and worked at both the Social Institute and at Stockholm University.
Jeff Hirshfield
Hirshfield was born in New York City. He studied under Ed Soph. He worked for the Joffrey Ballet in 1976-77 and then played with Mose Allison (1977–79). During the 1980s he worked with Red Rodney and Ira Sullivan (1981–85), Toshiko Akiyoshi (1986-89), and Bennie Wallace (1987–90). Alongside Fred Hersch and Steve LaSpina, he was a member of the trio "Etc." during 1988-91. During this time he also played in a trio with Hersch and Michael Formanek. From 1990 he played with Harold Danko, played in Formanek's Wide Open Spaces project, and played again with LaSpina in a quartet setting. He also worked in a quartet with John Abercrombie and Andy LaVerne early in the 1990s. In the mid-1990s he played in a trio with Marc Copland and Dieter Ilg (1992–95), another trio with Tim Berne and Formanek (1993–94), and the Lan Xang ensemble with David Binney, Donny McCaslin, and Scott Colley (after 1995).