Crossword Puzzle Treasured strings

Clue: Treasured strings

Long-necked strings (SITARS with 6 letters)
Yo-Yo strings (CELLI with 5 letters)
He played Hercule Poirot in "Death on the Nile" [strings] (PETERUSTINOV with 12 letters)
Waikiki strings, for short (UKES with 4 letters)
This has strings attached (APRON with 5 letters)
Pulls strings? (RELACES with 7 letters)
Strong strings (TWINES with 6 letters)
Hawaiian strings? (LEIS with 4 letters)
Brush strings (STRUM with 5 letters)
Celestial strings (HARP with 4 letters)