The term 'POP PRECURSOR' can be solved by the four-letter word 'DADA'. DADA was an artistic and literary movement that began in Zurich, Switzerland in 1916. It was a reaction to the horrors of World War I and sought to challenge traditional values and conventions. The movement was characterized by its use of absurdist and nihilistic themes, as well as its rejection of logic and reason. DADA was a precursor to the Pop Art movement of the 1950s and 1960s, which also sought to challenge traditional values and conventions.