Each year during the Rock Era delivered songs that took folks’ breath away — classics that still resonate today. But perhaps no year measures up to 1971, when many of rock’s greatest artists put out their masterpiece. Led Zeppelin IV. Who’s Next. Aqualung. Imagine. The list goes on, and we’ll sample a handful of rock songs from that amazing year in this week’s episode of KMB. And, because one week is not enough to cover all of the killer music from 1971, we’ll be back next week with 1971: Part II, an exploration of pop, soul and R&B from music's greatest year.