The EMS recording of Varese figured greatly in the musical awakening
of Frank Zappa, according to his autobiography.
I have a few EMS recordings besides the Varese. They are a recording
of three Hindemith sonatas for winds, a recording of some Milhaud
chamber music and an album of Haydn with Charles Rosen playing Haydn
backed with a Haydn partita conducted by Edward Fendler. I beleive
that I have a Dufay record.
Further details can be supplied if desired.