Download How to Instantly Give Your Songs an Irresistible Touch with the Backdoor Progression (ebook) Download the mini ebook about the backdoor progression. Learn how it works and how to use it – with helpful cheat sheets in all 12 keys. Matthias Orgler Read more posts by this author. Matthias Orgler 8 Jan 2021 • Subscribe to Real World Music Theory Get the latest posts delivered right to your inbox Subscribe Great! Check your inbox and click the link to confirm your subscription. Please enter a valid email address!