Stravinsky met the violinist Dushkin and composed a "Violin Concerto" as well as the "Duo concertante" for violin and piano which the two musicians played together at many concerts. He became more and more in demand in the United States and wrote several works for American people. He was offered a job as professor at Harvard University. At this time a lot of his family were ill. Then his daughter died, his wife died and his mother died. He was ill himself. Then, by September 1939, just as World War II started, he was well enough to travel to North America.