Music evokes emotion and emotion can bring it's memory.

[S]ince memory . . . is never a simple recording or reproduction, but an active process of recategorization--of reconstruction, of imaginatiom determined by our own values and perspectives.

[I]t is precisely such a paradox that lies at the heart of nostalgia - for nostalgia is about a fantasy that never takes place, one that maintains itself by not being fulfilled.

...read 1984 when it came out in 1949, and found its account of the ‘memory hole’ peculiarly evocative and frightening, for it accorded with my own doubts about my memory. I think that reading this led to an increase in my own journal keeping, and photographing, and an increased need to look at testimonies of the past