by the Soviet occupation authorities because of his Nazi party membership. That summer he participated anonymously in the Salzburg Festival. On 28 October 1947, Karajan gave his first public concert following the lifting of the conducting ban. With the Vienna Philharmonic and the Gesellschaft der Musikfreunde, he performed Johannes Brahms's A German Requiem for a gramophone production in Vienna. In 1949, Karajan became artistic director of the Gesellschaft der Musikfreunde, Vienna. He also conducted at La Scala in Milan. His most prominent activity at this time was recording with the newly formed Philharmonia Orchestra in London, helping to build them into one of the world's finest. Starting from this year, Karajan began his lifelong attendance at the Lucerne Festival. In 1951 and 1952, Karajan conducted at the Bayreuth Festspielhaus. Berlin appointment During its 1955 tour of the United States, Karajan's past membership in the Nazi Party led to the Berlin Philharmonic's concerts being banned in Detroit, and Philadelphia Orchestra music director Eugene Ormandy refused to shake Karajan's hand. Upon arriving in New York City for a concert at Carnegie Hall, Karajan and the Berlin Philharmonic were confronted by protests and picketers. In 1956, Karajan was appointed principal conductor for life of the Berlin Philharmonic as Furtwängler's successor. From 1957 to 1964, Karajan was artistic director of the Vienna State Opera. He was closely involved with the Vienna Philharmonic and the Salzburg Festival, where he initiated the Easter Festival, which remained tied to the Berlin Philharmonic's music director after his tenure. Last years In his later years, Karajan suffered from heart and back problems, needing surgery on the latter. He resigned as principal conductor of the Berlin Philharmonic on 24 April 1989. His last concert was Bruckner's 7th Symphony with the Vienna Philharmonic. He died of a heart attack at his home in Anif on 16 July 1989 at the age of 81. Karajan read the works of Father Hugo Enomiya-Lassalle on Zen Buddhism and became a practitioner of it. He believed in reincarnation and said he would like to be reborn as an eagle so he could soar over his beloved Alps. Even so, on 29 June 1985, he conducted Wolfgang Amadeus Mozart's Coronation Mass during a Mass celebrated by John Paul II in St. Peter's Basilica, on the Feast of Sts. Peter and Paul, and received Holy Communion from the hand of the Pope with his wife and daughters.