Australian literature Gordon's and Brennan's (but particularly Brennan's) works conformed to traditional styles of poetry, with many classical allusions, and therefore fell within the domain of high culture. However, at the same time Australia was blessed with a competing, vibrant tradition of folk songs and ballads. Henry Lawson and Banjo Paterson were two of the chief exponents of these popular ballads, and 'Banjo' himself was responsible for creating what is probably the most famous Australian verse, "Waltzing Matilda". At one point, Lawson and Paterson contributed a series of verses to "The Bulletin" magazine in which they engaged in a literary debate about
What Is and What Should Never Be descending riff [of "What Is and What Should Never Be"] is amazing: It's like a bow is being drawn back, and then it releases. The rhythm of the vocals is almost like a rap. It's insane — one of their most psychedelic songs." This was also one of the first songs recorded by the band for which Robert Plant received writing credit. According to rock journalist Stephen Davis, the author of the Led Zeppelin biography "Hammer of the Gods: The Led Zeppelin Saga", the lyrics for this song reflect a romance Plant had with his wife's younger sister. "What Is