### Clue: Recruit two players from quartet — drum noise heard (5)
### Answer: ENROL 
 ### Explanation: Definition: Recruit
 E,N(abbrev. for "east" and "north", respectively, 2 out of the 4 players/quartet in a bridge game) + **homophone of**(… heard) "roll"(drum noise/one of the basic patterns played on a drum).