In 1961 he performed with the New York Philharmonic under the baton of Leonard Bernstein,[11] and appearances with conductors such as Copland, Haitink, Leinsdorf, Levine, Mehta, Monteux, Ormandy, Ozawa, Previn, Schwarz and Szell continued throughout his career.
[12] Hollander was the only soloist on the World Tour of the Cincinnati Symphony Orchestra with conductor Max Rudolf in 1966 presented by the Department of State.
[13] His appearances in Europe began in 1965, when he made a recording in London of Aram Khachaturian's piano concerto and Ernest Bloch's Scherzo Fantasque with the Royal Philharmonic Orchestra and conductor André Previn.
Hollander has also performed with the orchestras of Boston, Chicago, Cleveland, Dallas, Detroit, Los Angeles, New York, Philadelphia, Pittsburgh, San Francisco and Washington's National Symphony, and internationally with the London Philharmonic, Royal Concertgebouw, Orchestre de la Suisse Romande, Jerusalem Symphony Orchestra, ORTF and New Tokyo Philharmonic.
[14] In 1971 he was the first classical pianist to give street concerts in East Harlem and in Queens, under the auspices of the Department of Cultural Affairs.
[15] Hollander premiered Norman Dello Joio's Fantasy and Variations[16] and the RCA recording with the Boston Symphony Orchestra with Erich Leinsdorf conducting was nominated for a Grammy in 1964.
[25] The award is given for: significant accomplishments by exceptional individuals who have brought new understanding to the use of the power of music to awaken and heal.