Shoegaze has no hard-and-fast rules, but the style's signature is right there in all that swirl and fuzz. My Bloody Valentine's "When You Sleep" captures its queasy, pitch-bending instability, The Jesus and Mary Chain's overdriven "Never Understand" pulls a brick from its towering wall of sound, and Cocteau Twins' "Lorelei" proves that melody and psychedelia can make for a blissful pairing.