Rolf Harris sees it going to convey understanding of diversity. Understanding and communication are just as much for the cooperation of young and old as a reasonable balance between closeness and distance.
A notable example is the mixture of calm and rock songs, from pensive and almost beswingten songs. Thus, there is something for everyone. Such songs can last a lifetime and lead on to accompany a good sense of music.
Highly recommended!
Very worth listening to!