This is hardly a new thing...

Some of you(the cool ones, anyway) might remember that back around 1990, with no permission from anyone, a couple dance music producers took Suzanne Vega's a capella recording of "Tom's Diner" and added a dance beat track to it, and in the process made it a big hit single.

You may also remember that drums, electric guitars and bass were added to Simon and Garfunkel's "The Sounds of Silence" without either their knowledge or permission.

Both, of course, were very successful, which makes all the difference...