The present thesis focuses on the development of the lyrics by the American punk rock band Green Day from their early years in the late 1980s until the present. For detailed analysis, I have selected eight songs, among them classics like ?Welcome to Paradise? and ?Minority? as well as songs from the band?s latest albums, such as ?American Idiot? and ?Last of the American Girls?. Various other songs and lyrics by Green Day will be included in a more concise way in order to provide a representative cross-section. Each of the selected songs contains relevant aspects for my investigation, especially with regard to recurring topics and themes, together with their changing importance in Green Day?s lyrics over the years. The first part of this thesis provides an overview of the most basic concerns and themes in the lyrics together with an outline of where the band members came from, what punk rock means to them, and how they became who they are now as a band. In addition, I demonstrate the way Green Day?s words often reflect the band members? lives and experiences. Moreover, I take a closer look at the importance of lyrics of love, which can already be found in the band?s early years, and describe to which extent the trio?s songs are influenced and inspired by women. In contrast to this aspect, another special focus is put on darker songs that stem from the post-Dookie period. Subsequently ? and indispensably ? Green Day?s first overtly political statement is examined, as well as the progression of the band?s lyrics since then.My lyrical analysis is loosely based on the band?s chronological development and discography in order to provide a meaningful background for my investigation. The overall purpose of this paper is to investigate the literary potential of Green Day?s song lyrics as well as the band?s versatility in this respect, both of which they have managed to bring to perfection over the years.