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)

Question: Who else was apart of the RPO if listed?
Self-contained rewrite: 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?