Rock Milestones Led Zeppelins IV. Word Search Puzzle Solver. Rock Milestones Led Zeppelins IV word Search Puzzle Game. Find words related to movie actors, actresses, and genres. Word Search Puzzle Solver. Rock Milestones: Led Zeppelin's IV zeroes in on Zeppelin's fourth LP an untitled effort that shot to the top of the charts upon release circa November 8 1971 and single-handedly shaped the landscape of hard rock over the ensuing decade. Rock Milestones: Led Zeppelin's IV goes behind the scenes to investigate why -- and how -- this album became a decades-long phenomenon and the inestimable impact it made on American music and pop culture in particular. This includes identifying and searching for words that are related to : Music, John Bonham, Jimmy Page, John Paul Jones, Robert Plant, Robert Plant, Music, John Paul Jones, John Bonham, Jimmy Page .