Achtung Baby is an album by Irish rock band U2. It shifted their musical direction by incorporating influences from alternative rock, industrial music & electronic dance music into their sound. Thematically, it is darker, more introspective & at times more flippant than their previous work. Critically acclaimed it debuted at #1 on the USA Billboard 200 chart & topped the charts in many other countries. The 5 singles released were all chart successes, including One, Mysterious Ways, & The Fly. It won a Grammy Award for Best Rock Performance by a Duo or Group. Achtung Baby is considered by writers & music critics as 1 of the greatest albums of all time!