Crossword Puzzle The eldest Smurf

Clue: The eldest Smurf

Much of the Smurfs' theme song, and this puzzle's theme (LLLLLLLLLLLLLLLLLLLLL with 21 letters)
She played Thelma (GEENA with 5 letters)
Old __ (London theatre) (VIC with 3 letters)
Therewithal (ALSO with 4 letters)
40's theater director James (NESI with 4 letters)
Polynesian-themed restaurant chain (TRADERVICS with 10 letters)
Theater passages (AISLES with 6 letters)
Theme of the starred entries (BEFORETAXES with 11 letters)
Composer of Carson's theme (ANKA with 4 letters)
Extravagantly theatrical play (MELODRAMA with 9 letters)