Very Johnny Cashy! I like it
A couple of things I noticed: when you sing "ghetto" you do a very aspirated "t". While great for classical singing, I think it stands out because the rest is a much more laid-back and casual diction. So you want to do it more like "geddo" instead (same for backing vocals).
Recording-wise, there seems to be some distortion on the vocals as the volume increases. Not sure what is causing this, but perhaps if you post elsewhere in the recording part of this forum you can get some feedback on your mix.
For vocal technique, I think as your voice fades, you sometimes lose tone which causes the pitchiness. So you have one kind of voice when it's full out which is nice and dark, and then when you fade to softer sound, it ends up losing the depth and thus changes pitch. So as you get softer, you need to add more darkness to the sound in order to maintain the integrity of the sound.
With Blue Moon, your sound changes considerably on the top. So either your lower darker notes are your real voice, in which case you need to be careful you sing notes that are within your range, or the higher less dark notes are your real voice and the dark stuff is an affect that you are putting on.
Which way feels more comfortable to you? What would happen if you got darker and louder (more air movement) as you went for those high notes instead of letting the larynx come up and squeeze off the sound, you may get a much more consistent tone.
