Jazz StandardsRhythm Changes Gb Rhythm Changes 0 Share Facebook Twitter Before you start... Download our free eGuide "Learn Jazz Standards The Smart Way" and make sure you are setting yourself up for success! Send it to me! This is Rhythm Changes in Gb. This key is great to practice, and will help open up your ears to these changes. Practice another key Leave a Comment Cancel reply This site uses Akismet to reduce spam. Learn how your comment data is processed.