I find that when a band/performer stops having fun playing music, plays music just for money, and/or stops playing music to challenge themselves that it starts to become the bland, monotonous (for lack of a nonoffensive word) stuff. The first few Metallica albums are so good because the band played music to have fun, and really only made new albums as an excuse to go on tour again. But once Burton died, things went awry and they realized that this was a serious business.
But a good album to me combines some progressive elements with previous musical footing in order to try and expand the bounds of what that genre of music is typically known to sound like, think Iron Maiden's pretty yet rocking "Seventh Son of a Seventh Son" album. But remember that experimentation also suffers from diminishing returns, see: The Mars Volta. Now, I don't want every band to be mathcore/grindcore/corecore (or whatever the hell the indie metal kids are calling things now) but some blend of progressive elements and melodies would be appreciated. My friend loves Jimmie Buffet and has a job doing covers by the pool at this high end yuppie resort, and he tells me that nearly every song is the same 4 chords. As a music nerd I just laughed and tried to walk away from that conversation without becoming pissed.
But a good album to me combines some progressive elements with previous musical footing in order to try and expand the bounds of what that genre of music is typically known to sound like, think Iron Maiden's pretty yet rocking "Seventh Son of a Seventh Son" album. But remember that experimentation also suffers from diminishing returns, see: The Mars Volta. Now, I don't want every band to be mathcore/grindcore/corecore (or whatever the hell the indie metal kids are calling things now) but some blend of progressive elements and melodies would be appreciated. My friend loves Jimmie Buffet and has a job doing covers by the pool at this high end yuppie resort, and he tells me that nearly every song is the same 4 chords. As a music nerd I just laughed and tried to walk away from that conversation without becoming pissed.