Firework - Katy Perry

	Same as the original tempo: 124 BPM
	In the same key as the original: A♭
	This file ends properly, without a fade out
	Duration: 03:49 - Sample at: 02:26

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• Can I modify my MP3 custom backing tracks after purchasing my order?
• Absolutely! Once you've purchased a song, all subsequent mixes are unlimited and free. You can modify all of the custom backing tracks, including ones you purchased months ago. All the files you've already bought are available in "My files".
• How do I create a custom backing track?
• Creating your mix
  To the right of each individual track, you can use the "MUTE" button to mute that track, or the cursor to adjust its volume.
  
  Adding to your basket
  Click on the "Add to Basket" button and proceed to the payment of your order. If you have any doubts about your custom backing track, you can modify your mix with the "MIX" button in the shopping basket. Once your order is validated, the final mixing of the file begins.
  
  Downloading the custom backing track
  To receive the best sound quality, the final mixing of your MP3 files can take a few minutes. You can follow your order on your My files page. When the mixing is finished, you can download it just like any other file.
• What should I do if the preview doesn't sound right?
• The preview tool may sometimes give a bad quality feedback. Though, the generated custom backing tracks will always be well synchronised and noiseless. Before your first order, you can sample our custom backing tracks with one of the free titles.
  If you're having some preview problems, here's how to solve them:

  • Update your flash player.
  • Restart your browser and eventually try with a different browser.
  • A clipped sound may be caused by a slow system. Close your running software and keep only your browser open.
  • If you're still experiencing problems, try with another computer.
• What if I can't find the custom backing track I want?
• If we already have the MP3 backing track, you can suggest the custom MP3 by clicking on the envelope on the related page. If the title you would like is not currently available in any format, you can request it with the suggestion tool.
  
  We do not currently have the separated mixes for all of our backing tracks, and unfortunately the audio multi-track conversion is long and complex. Nevertheless, we're doing our best to complete the custom backing track catalogue!