Frager regularly programmed the two piano concertos and numerous solo works by Carl Maria von Weber, as well as the keyboard compositions of C. P. E. Bach.
He completed acclaimed musical tours of Southern Africa in 1976 and 1978.[3]
Frager's personal library is now housed at the Sibley Library Special Collections at the Eastman School of Music in Rochester, New York.[4] His discovery of manuscripts includes a version of the Fantasie in A minor that later became the first movement of the Piano Concerto in A minor by Schumann. He premiered this with the Boston Symphony Orchestra under Erich Leinsdorf at the Tanglewood Festival in August 1968. He also unearthed and performed the original version of Tchaikovsky's Piano Concerto No. 1, which Nikolai Rubinstein had criticised so unmercifully as to cause the composer to withdraw the intended dedication to him.[5] In 1978 Frager visited the Jagiellonian Library in Kraków, Poland where he persuaded librarians to make available a cache of more than one thousand original manuscripts missing (and believed lost) since World War II. The collection included pieces by Bach, Beethoven, Schumann and Mozart.
In 1987 Frager received the Golden Mozart Pin from the International Mozart Foundation in Salzburg.[citation needed]
Frager performed Mozart Piano Concerto No. 19 with Nikolaus Harnoncourt and the Concertgebouw Orchestra in 1983.
Frager was brought up in a Jewish family that had converted to Christian Science. He died in Pittsfield, Massachusetts on June 20, 1991. His family declined to state the cause of death, but he was reported to have been ill for about a year.[6]
