I think there is always going to be inspired music and there are always going to be inspired listeners and there is always going to be an inspired method of getting it from A to B.
The hardest people to reach with the love of God are not the bad people. They know they are bad. They have no defense. The hardest ones to win for God are the self-righteous people.
But the best definition of it is to say that heaven is that state where we will always be with Jesus, and where nothing will separate us from Him any more.