Sick Riffs: Kohhei Matsuda and Yuki Tsujii teach you the avant-garde six-string psychedelia of Bo Ningen's Koroshitai Kimochi

Sick Riffs #90: At Guitar World, we love music that's a bit off the beaten track, so when the opportunity to present a Sick Riff from Japan noise-rock icons Bo Ningen presented itself, we jumped at the chance. The four-piece have crafted quite the niche over their near-15-year career, offering a plethora of unconventional arrangements and off-the-wall guitar riffs.

Guitarists Kohhei Matsuda and Yuki Tsujii join us to teach you the wacky riffs of their debut single, Koroshitai Kimochi. It's a time signature-fluid, tempo-shifting display of psychedelic wizardry, and we're certain you six-stringers will dig it.

Matsuda plays a Epiphone SG electric guitar through a Fender Vibro Champ amp via a Oyaide Neo G-Spot cable, and uses an Electrograve Ripper Fuzz pedal. Tsujii wields a 335-style electric.

"I love playing with people, so this situation we are all in right now is really taking away my biggest joy," Matsuda says. 

"I’ve been trying some online form of communication, exchanging files for example, but although it has been very fertile digging this modern form, it's not quite the same as being in the same room, sharing the same vibration of the air. I really miss it and am hoping to exchange spirits in real life form very soon."

Support Bo Ningen

Sick Riffs is a Guitar World video series designed to help guitarists affected by the coronavirus. Self-isolating players around the world have each filmed a lesson where they teach you one of their own guitar riffs, up close and personal. If you dig the lesson, we encourage you to buy music and merch from the artist or stream their music.

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Sam Roche

Sam was Staff Writer at from 2019 to 2023, and also created content for Total Guitar, Guitarist and Guitar Player. He has well over 15 years of guitar playing under his belt, as well as a degree in Music Technology (Mixing and Mastering). He's a metalhead through and through, but has a thorough appreciation for all genres of music. In his spare time, Sam creates point-of-view guitar lesson videos on YouTube under the name Sightline Guitar.