Simplify the following text for a Grade 13 native English-speaking person.
Original: On April 7 , 1994 , the Royal Philharmonic under the direction of Sir Gilbert Levine performed at the Vatican in the historic `` Papal Concert to Commemorate the Holocaust '' , with cellist Lynn Harrell and Academy Award-winning actor Richard Dreyfuss as narrator .
Simplified: On April 7 , 1994 , the Royal Philharmonic had the honor of performing at the Vatican in the historic `` Papal Concert to Commemorate the Holocaust '' with Sir Gilbert Levine .