Picker's symphonic music, including the tone poem "Old and Lost Rivers", has been performed by major orchestras such as the New York Philharmonic, the Chicago Symphony Orchestra, the Cleveland Orchestra, the Philadelphia Orchestra, the BBC Philharmonic, The Munich Philharmonic, the Tonhalle Orchester Zurich, and the Vienna Radio Symphony Orchestra. His piano concerto "Keys to the City" (written for the Centenary of the Brooklyn Bridge) is recorded on Chandos with his cello concerto and the orchestral work "And Suddenly It's Evening". Following this release, "BBC Music Magazine" proclaimed Picker's recent music "one of the glories of the current musical scene."