During his long and interesting life he 'rubbed shoulders' with many of the great creative and cultural icons of the 20th century. Which of the following people is NOT regarded as having been at least a close friend and/or artistic collaborator?

Igor Stravinsky was certainly among the few most remarkable musicians to bestride the 20th century, in which the writing and making of music changed more than ever before. Stravinsky wrote many different types of work including operas, ballets, symphonies, concertos, chamber music and choral works. His career last for more than 60 years and he died in 1971 at the age of 88.