Mega Pop edition no. 4 from year 2014 
Sheetmusic of Dark Horse - Katy Perry & Juicy J.
Includes free backingtrack (play-along mp3)
The free backing track is, after the order is completed, waiting for you in your account at downloads.

Please note that this product is available as a download (pdf).
Once your information is verified, you will automatically receive an email with a link to the download.