4 words for CP 1–2 letters

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

1 letter (2)

c p
Sort
Alphabet (A–Z)
Alphabet (Z–A)
Scrabble score

2 letters (2)

cp pc
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
AAIR
Hint 3 another clue
Solo
31 +2