REO Speedwagon, or simply REO, is an American rock band from Champaign, Illinois. Formed in 1967, the band cultivated a following during the 1970s and achieved significant commercial success throughout the 1980s. Their best-selling album, Hi Infidelity (1980), contained four US Top 40 hits and sold more than 10 million copies.

Hi Infidelity is the ninth studio album by American rock band REO Speedwagon, released on November 21, 1980, by Epic Records. The album became a big hit in the United States, peaking at number one on the Billboard 200, spending 15 weeks at number one. It went on to become the biggest-selling album of 1981, eventually being certified 10 times platinum by the Recording Industry Association of America.