Filmmaking / Directing : No money. Don't need your money. Need your attention. by Rafsan Mahmud

I'm 23 years old want to be a filmmaker. I am shooting a movie with a phone camera. Just shooting images. That's only cost my bus ride. But I can't add music. People say it cost lots of money. Is there any way to add music free. Anywhere I can get them for free. On the Internet. I don't want to steal anything. To be noted: It's not for commercial reason. Just want to shoot and make some moving pictures. Thanks in Advance.