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.

(MUSIC stops)
The Big Bang Theory Season 5, Episode 15

and I could hear MUSIC inside.
Breaking Bad Season 5, Episode 15

Fine. In the parlance
of the urban MUSIC scene:
The Big Bang Theory Season 4, Episode 20

♪ (SOFT MUSIC PLAYING,
WHISTLING) ♪
Westworld Season 2, Episode 2

Sound of Music sing-along?
That used to be our thing, but that's cool.
The Big Bang Theory Season 6, Episode 4