5 words for AEFST 1-letter words

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1 letter (5)

a e f s t
E.g. Puccini’s Che gelida manina
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A
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R
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I
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A
Hint 1 meaning
An air or song; a melody; a tune.
Hint 2 anagram
RAAI
Hint 3 another clue
Solo
17 +1