(English title) "[Family Mart entrance sound] Your Family Mart Is... [(=ω=.)]"
"Family Mart" ("Famima" "ファミマ") is real convenience store chain in Japan. These stores have an original entrance sound. From summer to autumn of 2009 in NicoNicoDouga, producing music based on this entrance sound became very popular among many producers.
Yuyoyuppe is good at production of the music of Screamo-like. His first work was late so that it was uploaded in Sep.2008, but his popularity is rising slowly recently. And his works came to get tens of thousands of view counts.