My daughter went along today with my parents. Apparently the selection of childrens books is very good (thank you), but I believe that the choice for classical music is extremely limited ("Do you have any Classical music?", "Yes, we have 2 CDs, but they both seem to be out").
Not sure how many out there share an interest in Classical music, or how much music is taken out in any case, but thought I'd pass on the feedback.
I need to check it out (!) myself soon. Good news that we have a nice new library in Forest Hill (I bet Provender are happy too)