15a Bound to give head to Brenda (5) c???r. Brenda is usually er but I just cant see what fits. 46a Tongue of opera diva over quivering hams (8) ???h???i . I think we need an anagram of hams and the answer may be an opera diva -but where does tongue come in? I' m not good on opera divas unfortunately. 51a Yiddish drag helps PC to adjust (7) ??h???p . I don't understand this clue. Many thanks