Jazz StandardsRhythm Changes A 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 A Rhythm Changes, an uncommon key to play, but a great exercise for improvisation. Practice another key Leave a Comment Cancel reply This site uses Akismet to reduce spam. Learn how your comment data is processed.