Chicago is an American rock band formed in 1967. The band began as a politically charged, sometimes experimental, rock band and later moved to a predominantly softer sound, becoming famous for producing a number of hit ballads. They had a steady stream of hits throughout the 1970s and 1980s. Second only to The Beach Boys in terms of Billboard singles and albums chart success among American bands, Chicago is one of the longest running and most successful pop/rock and roll groups. Highlights include a Grammy Award, multiple American Music Awards, a star on the Hollywood Walk of Fame, a Chicago street dedicated in their honor, and keys to and proclamations from an impressive list of US cities. Record sales top the 100,000,000 mark, and include 21 Top 10 singles, 5 consecutive Number One albums, 11 Number One singles and 5 Gold singles. An incredible 25 of their 32 albums have been certified platinum, and Chicago is the first American rock band to chart Top 40 albums in five decades. Chicago is a true American classic.