The advent of the Internet, has allowed users to "see a world in a grain of sand" and "hold infinity in the palm of your hand", even if only for five minutes’ surfing over a morning coffee before the day's tasks begin.  
 
Music in particular can be disseminated as never before, and for classical aficionados there is always more to discover in this seemingly infinite realm of resources. Even as the Berlin Philharmonic uploads the latest high-definition concert footage, some rare archival gem is lying in wait, freed from the physical confines of a library and unearthed at the click of a mouse. Want to see Callas singing at the height of her powers? Type in "Callas": chances are you’ll find just what you were looking for, alongside something you never knew existed.  
 
Of course, with millions of YouTube clips dedicated to classical music there’s plenty of filler to sift through. Limelight has strung together just 40 of the most informative, representative and entertaining videos we could find to present a selective, chronological history of western classical music from the twelfth century to the modern age. Concert, recording and documentary footage has been assembled to illustrate the most epoch-making moments and innovations in the field.