Chords Chords and Rhythm Sean DanielsHow To Riff On The 12-Bar Blues | Acoustic GuitaradminUpdated on August 31, 2021June 10, 2018Leave a Comment on How To Riff On The 12-Bar Blues | Acoustic Guitar [contentwall] [/contentwall][ninja-popup ID=715] Sign up to get free lessons from Sean Daniel’s first instructional guitar package. GO!!!