I did an essay on this a long time ago...
I'll copy and paste it if you want, or do you just want that badge for 1000s of replies...
PLEASE DO NOT COPY AND PASTE THIS AS I PLAN TO USE IT IN MY DISITATION
'Eduard Hanslick, a 19th century music critic, said that ?Music has no subject beyond the combinations of notes we hear, for music speaks not only by means of sounds, it speaks nothing but sound.? This man argued that music could be enjoyed as pure sound and form and that it needed no implication of extra-musical elements to stay. So for example things like Opera, song and tonal poems were often seen as music that took away the actual beauty of music in general, they were considered to be more aesthetically pleasing instead of musically pleasing.
Although Hanslick believed that Music could exist and still be considered beautiful without meaning there were many people who objected to his point of view. Richard Wagner and Friedrich Nietzsche, two experienced musicians that were very much against this idea, said "Art for art sake is about as purposeful as a worm chewing its own tail" and "Instrumental music is not strictly art at all". These two men could not understand how music art, both abstract and descriptive, could not have been made without a purpose, they found it ludicrous. '