How memorable and captivating various melody lines are. This includes all instrumentation.
Do the rhythms and percussive elements complement the music? Not indicative of technicality in this area.
Do the vocals – if any – complement the music? Do they stand out as necessary for the overall composition?
Does the album set out to accomplish what it intended? Is what it intended actually worth listening to?
Is the album well put together as a whole? Does it’s composition justify their stylistic decisions?