The Sweet mixed the instant hit of bubblegum pop with the rowdy guitar attack of ‘70s glam rock. Their greatest hits are addictive pop dramas, deadly serious and knowingly daft at the same time. “The Ballroom Blitz” and “Block Buster!” take a raw shuffle and apply theatrical polish, while “Teenage Rampage” introduces a note of tension and “Hell Raiser” adds a welcome puff of pantomime brimstone. “Fox on the Run” takes a Slade-type terrace chant and layers on harmonies, while the smirking “Little Willy” proves that even the loud guitars are secondary to an unforgettable chorus.