Evidently, one of the main characteristics of Touhou music is the two-step drum beat, typically called the "putta puputa" because that's pretty much exactly what it sounds like.

 
No artist had ever used a 4/4 time signature before, and putta swept through the musical community like a tsunami.

 
However, when other artists would've quit at that point because they'd have thought to have reached their potential, ZUN's creativity didn't end there; he went on to pioneer variations such as the slow putta.

 
Critics said he went too far when he made a track without putta, and the experiment was never spoken of again.

 
Eventually the trend grew to a point where it had to be contained: UN placed restrictions on putta, issuing the policy "never go full putta".

 
My biggest question is why is this in the Anime section, but I'm alright with what appears to be a touhou music thread.