Go to the Google search box and type the following and hit enter:
“?intitle:index.of?mp3 linkin park“
The first search result will lead you to the page that contains all the musical tracks of Linkin Park. Now you could download any of its songs! For any other artist you could just replace the words ‘Linkin Park’ by the name you would like! If you feel like searching for some pdf files, replace ‘mp3’ by pdf and fill in your criteria in place of ‘Linkin Park’ and that should get you all the pdf’s you require.
Go ahead and try some of these:
“?intitle:index.of?pdf harry potter“
“?intitle:index.of?mp3 the scorpions“