So, I know that just about everyone here (including me) thinks of the words "good" and "bad" (in terms of music) are very subjective and hold no factual weight.
However, I've been thinking about if there actually can be a true factual definition of the words. After thinking about this, I came up with something that I believe in.
I think good should be defined as how well an artist/band is able to get the sound that they envision.
Basically, if an album ends up being exactly how a given band envisioned it in their mind, then it's amazing. But if Katy Perry wants to make a catchy, chart-topping single, but it ends up coming out as an erratic progressive death metal song, then it is absolutely horrible.
The thing about this is that the only way to truly judge music with this definition is if you are actually the artist, which of course we aren't. However, I think it's actually a good definition. What do you guys think?