If you can be arsed, list tracks that you never tire of. They may not be your favourite tracks but they're tracks that remind you of someone, somewhere or something and give you an overload of emotion, whether good or bad.
Here are mine in no particular order:
Aphex Twin - Xtal
Part Time - I Wanna Take You Out
Yves Tumor - The Feeling When You Walk Away
Talk Talk - New Grass
Bark Psychosis - Absent Friend
Chromatics - Cherry
Ariel Pink - Another Weekend
Sun Araw - Deep Cover
Slowdive - Blue Skied An' Clear
μ-Ziq - XT
Saint Pepsi - Private Caller
Neon Indian - Era Extrana
There are many others but these stand out the most to me.