4 words for AT 1–2 letters

Filter answers for the "at" by length:
Sort
Alphabet (A–Z)
Alphabet (Z–A)
Scrabble score

1 letter (2)

a t
Sort
Alphabet (A–Z)
Alphabet (Z–A)
Scrabble score

2 letters (2)

at ta
E.g. Puccini’s Che gelida manina
?
A
?
R
?
I
?
A
Hint 1 meaning
An air or song; a melody; a tune.
Hint 2 anagram
RIAA
Hint 3 another clue
Solo
27 +2