### Clue: Note fool in rear moving – source of emotional reaction? (4-6)
### Answer: TEAR-JERKER 
 ### Explanation: Definition: source of emotional reaction
 TE(the syllable representing the seventh note of the musical scale) + [ JERK(a fool) **contained in**(in) **anagram of**(… moving) REAR ].
Defn: An excessively sentimental film, book, play, etc.