This is his (Sike) website, where he blogs and sells his overhemd, shirt designs under the 'sike shop' link. check it out - his designs are pretty cool. =)
The site states: "None of these bands are real. We are just trying to fool some foreigners." The fake band names are funny though: Office, Hair Dryer, Ear Muffs, Brussels Sprouts, Backpack, Marching Band, ...