Anniversary Cryptic

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Across
  1. 3. Decent glasses allow you to see 1050, why? Because the prescription is suitable.
  2. 5. Structuralist at the bath house has been, bizarrely, cut afoul.
Down
  1. 1. Sondheim’s grand piece gave Perkins a needy STD. Woe, queerly, to the passionate couple.
  2. 2. Novel moment wherein Marlo lit a match.
  3. 4. Tony has been boozing, listening to the recompositions of Holst.
  4. 6. Caricatures depict Judy Garland as a vehicle with melody.