The answers to the clues below will have something in common.

1. Ancient Mariner's lament
2. Nursery rhyme gardener
3. Evil queen's advisor
4. Equal owners in a business
5. Evergreen State city
6. Beginning of a favorite children's song
7. 60's Classic by the Mamas and Papas
8. Possible audience response after a play
9. Possible audience response after a concert
10."It's a wonderful town!"

Answers:

Each clue leads to an expression in which one of the words is repeated twice in a row:

1. "Water, water everywhere, but not a drop to drink"
2. Mary, Mary, quite contrary
3. Mirror, mirror, on the wall
4. Fifty-fifty partnership
5. Walla Walla, Washington
6. Twinkle, twinkle, little star
7. "Monday, Monday"
8. Author, author!
9. Encore, encore!
10. New York, New York

Credit: LA Times Crossword
Sylvia Bursztyn and Barry Tunick
ONCE IS NOT ENOUGH  (#1-5)