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the entire article needs to be sectionalized (try more headings and subheadings); it doesn't look or read like a summary.
all images need sources and fair use rationales.
The section titles are not written with an encyclopedic tone
the sections themselves are extremely long. It seems like they could be reorganized so that instead of a chronology of the band, each section focused on one element of the band and how it changed throught the band's history.
Lead should be a summary of the articles content, and is rather brief considering the length of the article and the 40+ years the band have existed