What do the following name and phrases have in common?

1. Placido Domingo
2. Cocoa flavor
3. Humor oneself
4. Masonic lodge
5. Reading battery
6. Fall outfit
7. Worlds apart
8. Pacific humpback
9. Seemed uncertain

HINTS:
#1: Each clue contains a hidden, related word.
#2: Refer to the title of this puzzle (below answers).

Answers:

1. placiDO DOmingo
2. cocOA Flavor
3. huMOR ONeself
4. masoniC LODge
5. reaDING BATtery
6. falL OUTfit
7. worldS APart
8. pacifiC HUMPback
9. seemeD UNCErtain

Credit: NY Times Crossword
Lynn Lempel
THE INSIDE DOPE