For me it's more like attachment to certain periods in life. Like, Shangri-La album came out when I went to school, Kill To Get Crimson came out exactly when I were trying to get into university, then Get Lucky saved me from depression when I was dropped out of university. Privateering came out exactly when I met my future wife and so on. When people say, "Mark's music is the soundtrack of my life", they usually really mean that.