"Courtesy - Super Hexagon" is a high quality rip of "Courtesy" from Super Hexagon.
The rip features a mashup between the advertised track and a remixed version of the song "Bad Apple!!" made by Masayoshi Minoshima.
The original "Bad Apple!!" song was created by ZUN for the Touhou Series game Lotus Land Story.
The key notes of the Meet the Flintstones theme can be heard at 3:40 as the rip nears its end.
- "Ｂａｄ Ｈｅｘａｇｏｎ！！" on RedScreen's Soundcloud