Shakespeare Reference in The Bridge Across Forever

Richard Bach's The Bridge Across Forever contains a reference to Romeo And Juliet. Leslie is playing music that Richard is not familiar with. She tells him it's Prokofiev. He asks the name of the music. "'Oh, Richard,' she gasped, wiping tears. 'It's Romeo and Juliet...'" (p. 170). This book was published in 1984. My copy was from the February 1986 reprinting.