on its own can mean "in the history", but it can be combined with many nouns to mean "in the history of ". For example you can say (the greatest president in the history of America).
So also literally means "in the history of Mao Abe," which is already a bit colloquial usage of (it can be used in ads but not in formal documents). However, in this context, it doesn't even refer to her actual career as a musician, but refers to the author's own personal experience concerning Mao Abe. The author is comparing his memory concerning Mao Abe to "history." This is not a proper way of using , but we can feel he has liked the musician for a long time. means the author himself is listening to the album most as compared to her previous albums.