I'm not calling anybody's music or tastes out here. But I'm sure there's a song you can think of that fits this.
I'm the Scatman by Scatman John is my pick. It meant a lot to me as a stuttering 12 year old. I don't like eurodance or anything of the sort, I kinda think it's terrible, but this song just makes me smile every time.
Jonathan Coulton and some other Filk has definitely been there during some seriously bad depressive episodes. I wish JoCo's tickets didn't sell out so fast, even if I have a moral objection to his cruise parties.
I think I speak for all of us when I say understand