For example, when a popular song is used as —meaning the characters can hear it within their world—the lyrics become part of the scene’s reality, commenting on the action rather than just underscoring it.
Lyrics reveal a character's innermost thoughts, desires, or secrets, acting as a direct window into their psyche. i film song lyrics
Here’s a quick guide to (likely meaning lyrics from Indian film songs, such as Bollywood, Tollywood, Kollywood, etc.): For example, when a popular song is used