I've been pondering this for a while, an amazing number of people seem to play 'classical' repertoire but not actually have a general interest in it. Obviously many people here do; there are, however, also a large number of people, here and elsewhere, who don't seem to have an interest in their instrument's repertoire beyond their own playing. This occurs even more so with other repertoire of the same genre for different instruments. This is reflected in people reaching grade 6 and still finding the question of whether a piece is Baroque or Romantic difficult to answer in the aural test. I wouldn't think it would be a challenge to an (even slightly) experienced listener of the genres of music played for the exams....
From this arises the situation that pianists get to diploma level and don't know how many piano sonatas Beethoven wrote, and could only recognise two or three of these works from hearing them, despite them being core repertoire. Further a lot of people seem to play 'classical' repertoire on an instrument but do not listen to it at all, stating popular music as their favoured choice. Another phenomenon is that children (and many adults too!) seem to pick the 'jazzy' pieces from the grade lists (or even to play for pleasure) but rarely listen to this style of music either. Even people who prefer to listen to the modern popular classics style, often approachable to pianists of grade 5/6 standard (I won't name specific composers), still strive to play harder works advancing their techniques beyond this, playing pieces they do not like as much.
So my questions are: how familiar are you with your instrument's repertoire and the wider repertoire of the genre you usually play? Is the repertoire you play generally the sort of repertoire you like to listen to? If not, why do you play it? Do you think there is a general lack of interest in listening to 'classical' music even amongst those who play it? I notice concert audiences are often quite 'mature' (to use a polite term!), whereas many of the people I know who play are considerably more youthful.
