The best way to learn proper English is to read news report, and watch news on TV. Watching TV shows is a great way to learn casual English, slang words, understand culture reference and humor. If you have already watched these shows then you may recall the words used in the following dialogs.

I study the brain, the organ responsible
for Beethoven's "Fifth Symphony."
The Big Bang Theory Season 4, Episode 24

They liked going to the Mumbai Symphony...
The Big Bang Theory Season 8, Episode 9