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In page Danny Kirwan:

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By the summer of 1972 Kirwan had been writing, recording, touring and performing continuously for nearly four years, since the age of eighteen, as a member of a major international band.[1] He had shouldered much of the songwriting responsibility during the band's recent troubled and uncertain period and through changes in line-up and musical style. He had also found himself pushed into the spotlight as lead guitarist and front man to replace Peter Green.[1] The pressure eventually affected his health: he developed serious problems with alcoholism and there are stories of him not eating for several days at a time and subsisting mostly on beer.