The answers to the following clues will have something in common:

1. Regain self-control
2. Stylish London apartment
3. Like certain speakers
4. Settled once and for all
5. As a bit extra
6. Employees' get-together
7. Architect's diorama
8. Register
9. Phony advice
10. Like a dog-and-pony show

Answers:

1. COMPOSE yourself
2. SHARP FLAT
3. KEYNOTE
4. Laid to REST
5. For good MEASURE
6. STAFF meeting
7. SCALE model
8. Take NOTE of
9. Act NATURAL
10. ORCHESTRATED 

Credit: LA Times Crossowrd
Sylvia Bursztyn and Barry Tunick
COMPOSE YOURSELF (adapted)