Conversation so far:
Who were notable Royal Philharmonic Orchestra members?
Among the well-known musicians who have been Royal Philharmonic Orchestra principals include Steven Staryk, Raymond Cohen, Alan Loveday, Erich Gruenberg, Barry Griffiths, Jonathan Carney and Frederick Riddle.
When were some Royal Philharmonic Orchestra members promoted to principal and in what year?
Royal Philharmonic Orchestra principals in the mid-1950s and later, including Steven Staryk (leader, 1957–59), Raymond Cohen (leader, 1959–66),Alan Loveday (leader, 1967–71), Erich Gruenberg (leader, 1972–76)
Who else was a part of the Royal Philharmonic Orchestra if listed besides Steven Staryk, Raymond Cohen, Alan Loveday, Erich Gruenberg, Barry Griffiths, Jonathan Carney, and Frederick Riddle?
Royal Philharmonic Orchestra's Chief conductors have been Walter Weller, André Previn, Vladimir Ashkenazy, Yuri Temirkanov and Daniele Gatti.

Question: What was the last years of notable RPO's?
Self-contained rewrite: What was the last year of a notable Royal Philharmonic Orchestra conductor?