Complex sentence: Robert Lawson Craft (born October 20,1923) is an American conductor and writer on music best known for his friendship with Igor Stravinsky, a relationship which has resulted in a number of recordings and books.
Split into simpler sentences: Robert Lawson Craft (born October 20,1923) is an American conductor and writer on music. He is particularly noted for his close friendship with Igor Stravinsky, a relationship which has resulted in a number of recordings and books.