"Chicago" (often listed as "Chicago / We Can Change the World") is the debut solo single by English singer-songwriter Graham Nash, released in 1971 from his debut solo album Songs for Beginners. The song reached number 35 on the US Billboard Hot 100 chart and number 29 on the Cash Box Top 100. It is his highest-charting single. In Canada, "Chicago" peaked at number 19. The song also made the Dutch charts in 1971, peaking at number 5.