My all-time favorite concert experience. I saw Pink Floyd in Los Angeles during the Dark Side of the Moon tour. They brought their multi-level sound system. Both levels could rotate the sound and be controlled individually. During their performance of DSOTM, both levels were spinning in opposite directions, and started slowing down to actually stop, together, over and around the stage. When the band hit the lyric “…and everything under the sun is in tune, but the sun is eclipsed by the moon,” I swear, time actually stopped and hung there for a long moment. I will never forget.