Foo Fighters "I'll Stick Around" guitar lesson. Today we're using the Electro-Harmonix Big Muff Pi with Tone Wicker and the Stereo Poly Chorus to give one guitar a big, meaty tone. In standard tuning, the main riff uses some quick power chord changes while the verse employs the C chord shape in different places for jangly alternatives of the G, F, E progression. During the pre-verse, Dave Grohl uses G7 and C7 chords for a jazzy vibe but quickly builds intensity with palm muting to break back into the main riff. Enjoy your riff of the day guitar lesson.