This is an NGADM Round 1 review.
I would HARDLY call you from all people on Newgrounds a one-trick pony. Other than the fact that the production is pretty much nailed, the drums sound excellent, and most of the sounds are well-chosen, this song takes unique to a new level. I can honestly never even attempt to predict what will happen next in your music, and this song is no exception, with its almost random cute little piano melody at the beginning followed by a departure to something totally different.
Now for the bad news. The piano during the drum sections feels entirely detached from all of the other instruments in the mix, to the point that most of the time it sticks out like a sore thumb. This would be an interesting way to spice things up but considering that you have that piano playing almost all the time, it really ends up sounding very stale, very quickly. None of the melodic content here is particularly good, as the only semblance of a melody can be found in the piano parts that are often made to sound like they're riddled with performance mistakes and, again, don't quite fit with anything else. The piano here can be compared with an old but great NGADM track you made, Black Widow, which has a piano that NAILS the atmosphere (and even being occasionally atonal and wacky like the piano over here is), but unlike that track, the piano in this track unfortunately feels out of place.
Not quite the amazing, surprise-filled track I was expecting to get from you, given your musical talent, but on the bright side this track at least nails the "surprise-filled" part. And the production is incredible as a bonus, so I think 5.4 is a fair score.