### Clue: Record set by Border taking an age to get to fifty is short-lived (9)
### Answer: EPHEMERAL 
 ### Explanation: Definition: short-lived
 EP(a vinyl recording format, with more content than a single, but less than an LP) **plus**(set by) HEM(border;edge) **plus**(taking) ERA(an age;a long distinctive period of time) **plus**(to get to) L(Roman numeral for "fifty").