I don't really have a top 10 since I enjoy mostly all music and have tons of favorites.
But I will say that my favorite song of all time is Fireflies by Owl City.
https://www.youtube.com/watch?v=psuRGfAaju4
Mainly because my favorite year of my life was 2010, which was only 5 years ago and also when the song released so it always brings back good memories for me.