This isn't standard trance, and it would be nice to point out that it's the chorus rather than the lead or bass, basically, you didn't explain well enough for me to understand anything other than that there's four notes being used somewhere. Criticism doesn't have to be nice, and it doesn't have to be mean. If it's constructive, it's neutral, and if you have some kind of mindset that you are going to be giving me "nice" or "mean" criticism, then I'd rather not have any at all. You could've also said, "you should use chord progressions," but no, you just said "It sucks because it has 4 notes."