The first track:
Cool beat, but the repetition of the same vocal samples over and over gets old pretty quickly. Better to make it completely instrumental. I also think it uses a bit too much distortion, and it’s too long to be that repetitive. With rap vocals and/or several verses it could work, but now it could be better off being 1:30 or so.
The second track:
This is supposed to be an emotional track, and to be emotional, it needs more dynamics and a real, authentic piano feel. This one I also feel is way too long. Can be shortened to around 2 minutes or less.
The third track:
Cool track, I like this kind of music. Absolutely retro/80s feel but I don’t see anything wrong with that. It might have been rejected because of that though, hard to tell. The piano could be a bit softer.