### Clue: A quiet look to the doctor for assurance (6)
### Answer: APLOMB 
 ### Explanation: Definition: assurance
 + P(abbrev. for "piano", the musical direction to play softly) + LO(look!, as in "lo and behold!") **plus**(to) MB(abbrev. for a Bachelor of Medicine, a doctor).
Defn: Self-confidence.