### Clue: Quiet time with a partner starts to nark us more each year (3,5)
### Answer: PER ANNUM 
 ### Explanation: Definition: each year 
  P(piano,quiet) ERA(a long time period) **plus**(with a) N($$N$$orth, the partner to the player South in bridge notation) N,U,M(initial letters of,starts to "nark", "us", "more" respectively)