Combined hard rock with acoustic guitar and synthesizers with piano. Add a touch of musical theater and you have the sound of Styx. Formed in Chicago in 1972, Styx is considered one of the most influential progressive rock bands of the 1970s and 1980s. In August 1961, at 12 years of age, twin brothers Chuck and John Panozzo first played music together with their 14-year-old neighbor Dennis DeYoung who played accordion and sang. The trio eventually used the band name“The Tradewinds.”