Blue Oyster Cult tried a new producer on Mirrors, replacing longtime mentor Sandy Pearlman with Tom Werman, a CBS staffer who had worked with Cheap Trick and Ted Nugent. The result is an album that tries to straddle pop and hard rock just as those acts did, emphasizing choral vocals (plus female backup) and a sharp, trebly sound. But this approach appeared to displease longtime metal-oriented fans without attracting new ones: "In Thee" became a minor singles-chart entry, but the album broke BOC 's string of five gold or platinum albums in a row. The real reason simply may have been that the songs weren't distinctive enough. Much of this is generic hard rock that could have been made by any one of a dozen '70s arena bands.