E7 Blues Shuffle — 12-Bar Blues (SoundSplice Example) In this SoundSplice example, I’m playing a classic E7 blues shuffle through a full 12-bar blues form. You’ll hear the tight, swinging rhythm that anchors early rock and Chicago blues, with clear changes between the I–IV–V chords. Use the loop and slowdown tools to lock in the shuffle feel, clean up your chord transitions, and start jamming along with a real blues groove at your own pace.