Personally, my vote would go to the second one. It would be nice to know of the sentiments of other DFers. Good music is what you feel is good. It is pointless to try to come up with an objective definition of good music. IR for example, has composed several songs, which on the musical side of them, may not be great, but on the screen , are excellent.
Art is a refined form of expression.
The most expressive music would be the best. To a certain extent it depends on what the listener thinks is good - but that is only when the listener is able to understand what the musician is trying to express. Music cannot be good because the listener is able to hum along. There are a lot of songs that have been appreciated for the wrong purpose and similarly there are a lot of songs that have not been appreciated because the listener is not aware of the purpose or the musician has not done justice to the purpose. That song is as far away from being a ditty as is possible.