ProGuitarShop Riff of the Day. Learn how to play Queens of the Stone Age, I Think I lost My Headache. We're featuring the thick yet clear sound of the Black Arts Tone Works Pharaoh Fuzz. With an odd 15/8 time signature and C standard tuning, this riff is sure to put you in a hypnotic state. Enjoy your QOTSA, I Think I lost My Headache lesson.