### Clue: Sailor ought to drop soprano for other singers (5)
### Answer: ALTOS 
 ### Explanation: Definition: other singers
 SALT(a sailor, especially an old and experienced one) + O(the letter representing zero, which symbol 0 is called a cipher, an aught or ought) **with the** "s"(abbrev. for "soprano") **moved to the end**(to drop …, in a down clue).