The crossword solution for the term 'POP'S ___ POP' is IGGY, a four-letter word. Iggy Pop is an American singer-songwriter, musician, and actor who was an influential figure in the punk rock movement. He is known for his outrageous and unpredictable stage antics. His music has encompassed a range of styles over the years, including garage rock, punk rock, hard rock, and blues. He is also considered to be one of the most important innovators of punk rock.