I know this is 6 years old. But if you want to make the track louder, put the recording in Audacity (or any other DAW) and Normalize the audio clip, which will put the loudest peak in the entire audio file at 0db, making it as loud as it can be without clipping.

The sub at 0:40 is very, very out of key. But this song is 7 years old, so it doesn't really matter.

good track, although i would suggest normalizing the track, as there is a lot of headroom currently, and you can easily boost the gain to make your track louder without sacrificing any quality.