The starting beat is okay. I like that it's not a normal beat, in a way that you don't have four beats constantly, the fourth being a bit louder than the other three and that repeating. Having a different beat makes the song a bit more special.
To give the beat a bit more power, you could try adding something that "breaks" the beat by doing something different every fourth or second beat later on in the song; something longer and dark sounding or the complete opposite: a clear note. It's still a good beat to carry the song. Though
I really like the (jungle?) drums that start at 0:22. Along with the mysterious feeling that the electronic instruments give, it makes a nice combination of instruments.
What I also think is great is that you made the song less repetive by switching between parts with the dub sounds in them, parts where the jungle drums are more on the foreground and parts where the beat was almost on its own. While the song is called simplicity, it's not simple as in there are not many differences.
I have two small points of critique. The first one is that I don't like that you used the trick of the beat going faster, and right after that a stop twice. (At 0:49 and at 1:55). If you make a stop in your song every minute, the spontanity and the surprise isn't there anymore. Although it's a trick that you did well, I don't think it wits with a quiet song like this that well, and certainly not twice.
Another nitpicky thing is that I don't like when you started the beat again at 1:00 and 2:07. It's just before the third beat I think, and It doesn't sound right. I can imagine that you tried to make the song a bit more playful, and you're probably more experienced with rhythms and songs than I am, but that's just how it feels to me.
Overall a song with almost no mistakes, and with enough effort put in to sound well. It doesn't need any exiting stuff IMO.
Sorry I'm a bit late with reviewing, by the way.
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