Without even playing the thing i can already see that there isn't much of "mastering" going on, just look at how this thing looks, don't even play it and then look back here. https://www.newgrounds.com/audio/listen/802825
Guitar is great. Can't understand what the vocalists are ....OH never underestimate ... uuuum ... who will be there .... you think it's me .... the city .... alright i can hear things now.
And now i can't hear anything again, when this "helicopter effect" comes in. The vocal sounds drunk though. The song kind of goes nowhere, it gets to a .... "song" part and sort of stays there, can't see any like "verse", or "hook" , everything is too similiar, some instruments come in and leave but everything still feels very static.
Trumpet(s) are cool. Crash "crashes" too often ... like waaaay too often. Still can't hear anything the vocalist is saying, oh look he laughts ... still have no idea why. ... oh CITY ... no i don't know again ... he laughts again and ... BUST YOU DOWN ... alright ... it's over.
So ... it stays pretty much the same , doesn't feel like it progresses anywhere, no obvious parts and no obvious difference between them.
Vocalist is drunk, bring some water and a bucket, let's wake this poor fella up. The mix is kind of "drunk" too ... so ... two buckets ...
It's not loud enough, and also it has too much of very high pitched noises and if you'd just make it louder than it would just be painful. It's a complicated thing and it has to do more with mastering and mixing and audio production and all the digital type of deal, i'm no expert here to give you some technical advice, but there are a lot of courses online that can fix it , diana took one yesterday and it was pretty short, it doesn't look like it helped by much, since the song she mastered only gets 3's and 0's so um ... contradictions everywhere ...
Alright ... i'll try again ... figure out all the production type of deal , the music is alright, the vocalist sounds confident at the very least and with a good production the "drunky" thing would be kind of cute and charming , i'm joking of course, vocals are fine but i can't hear a thing when everything is so much "WBZRGHTZNG CHHHHH!!!!! WBRASKAJBGK CHHHHH!"
Words ... You know ... They are hard.
And with the "stars" thing i usually leave either "4" if there's something to be improved and for "5" if it's perfect. So here you'd need some production "power ups" to improve. And also ... no no no it's already way too freaking long i'm sorry.