Okay, so imagine you're watching a really fun movie and suddenly there's a part where everyone starts singing and dancing, but the singing sounds different than what you usually hear in songs. That's called a qawwali!
Qawwali is a type of music from India and Pakistan that usually involves a group of people singing together in a really powerful way. They often use a kind of music called Sufi music, which is all about expressing love for God and spirituality.
Now, in some Bollywood (Indian film industry) movies, they like to put qawwalis in as part of the story, especially when there's a big party or festival going on. These are called "filmi qawwalis."
In a filmi qawwali, the actors in the movie become the singers and dancers, and they usually wear really colorful clothes and move around a lot while they sing. The lyrics of the qawwali might be about love, or it might be about something else important to the story.
So, when you watch a filmi qawwali, you're basically watching a fun, musical performance that's part of a bigger movie story. It's a way of bringing a very traditional type of music and cultural expression into popular cinema!