Series consists of correspondence between Esprit Orchestra (predominantly Alex Pauk, Artistic Director) and musicians, composers, and other associations of the Orchestra.
Correspondents include: Robert Aitken, Luciano Berio, Louis Bessette, Maurice Bourgue, Tim Brady, Glenn Buhr, Canadian Radio-television and Telecommunications Commission (CRTC), Michael Colgrass, Marius Constant, Consulates (various), Paul Dolden, Wolf Edwards, Jose Evangelista, Ron Ford, Paul Frehner, Goethe Institut, Rivka Golani, Denis Gougeon, Governor General's office, Patricia Green, Sofia Gubaidulina, Chris Harman, Ofra Harnoy, Alice Ho, Willem Jeths, Helmut Kallmann, Henry Kucharzyk, Larry Lake, Louis Lortie, Bruce Mather, National Arts Centre, Yuji Numano, Michael Peppa, Erik Ross, Jeffrey Ryan, R. Murray Schafer, Barbara Sellers-Young, Soulpepper, Andrew Staniland, Mark Steinmetz, Andrew Stewart, Norm Symonds, Toru Takemitsu, Roger Tessier, Barry Truax, Owen Underhill, Astrid de Vries, He Xuntian, and Frank Zappa.
Series also includes letters from composers and performers that accompanied scores and/or recordings (names not listed above) submitted to Alex Pauk for consideration, and general correspondence from concert presenters, attendees, and composers.