Romances by Shakespeare, originally including moving period piece mostly involving Romeo (6-7)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

first letters (originally) of B-[y] S-[hakespeare]; around anagram/”moving” of (period piec )* and around R (Romeo, NATO alphabet) piec in the anagram fodder is piec-[e], mostly