Special Editions of “The Golden Age of American Rock’n’Roll” have to be special to justify their existence and sequels, such as this, are subjected to even greater analytical scrutiny in the preparation process than even the preceding volume, thus avoiding the sense of déjà vu that blights many a follow-up work. Considering that doo wop was a largely American phenomenon and very much of its time, Ace’s Special Doo Wop Edition proved exceptionally popular.