All you need to do is know how to create a query in Google that will find the exact song you are looking for. Here’s how to find MP3 files in open directories using Google:

-inurl:htm -inurl:html intitle:”index of” “Last modified” mp3

The inurl filter and intitle filters are used to find the open directories on the Internet. The mp3 filter at the end tells Google to look inside of these directories for any files with mp3 in the name. You can also search for WMA and OGG by changing the value of mp3.

You can also create a more specific query, i.e. for a particular band or song, by adding more filters after the mp3 filter. For example, here I am searching for Britney Spears songs:

-inurl:htm -inurl:html intitle:”index of” mp3 “britney spears”

There are a couple of ways you can search for music using Google search and I will list out a few more that I have used before for finding music via Google search:

-inurl:(htm|html|php) intitle:”index of” +”last modified” +”parent directory” +description +size +(wma|mp3) “Britney Spears”

This one is slightly longer, but does pretty much the same thing. As you can see it includes a few more filters that are not present in the first search mentioned. You can try out both and see which one gives you better results. Using both, I’ve been able to find tons of songs related to Britney Spears, not just her own, including parodies, remixes, etc.

via Online Tech Tips