New Year Double Toughie: Disappearing Acts by Elgar

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The silver lights are to be filled, jigsaw-fashion, by members of a thematic group clued by anagrams. Each anagram is one letter short; the omitted letters, spelt in the order in which the clues are presented, spell another member of the group. The letters in the yellow cells may be rearranged to spell a further group member who disappeared later than the others, those in the aqua cells a related work.
Anagrams
• Urn? I’m a vat!
• Racy Berry!
• Athlete Heinz threads my job sequence
• We ran in tandem
• Cabbagemongers
• Adverb limit
• Dowdier id
• Lanes, arguably
• A toy rail
• Poet’s glitter
• Loco, I
• New UN job
• BLT in R.U. lull
• Where’s Nan?
• Rib bird’s banner
• All-time yarn
• Of Malta
• A single