Clannad after story ost just hits the feels and angel beats. Can't think of many songs off top of my head
Card captor sakura op theme was the first I really memorized besides naruto, so whenever I hear it i immediately sing along and remember the words as I go kind of thing. Makes me feel like I'm young again~
Anisong that makes me feel happy and peaceful? Harmonia, I guess. It also has a nostalgic value to me for being the theme song of my YGO Chaos deck, back when I was still playing it. Seriously: "Hikari ga umare, yami ga umareta, futatsu wa hitotsu, harumoniaaaa, terepashiiiii.... nee kikoemasu ka" PS: For those of you who's never played YGO, try looking up "YGO chaos deck". You'll get the reference.
The first two bleach op and the 14th One piece the opening with the sank flashback Shouwa genroku op Terror in resonance op Pandora hearts op
This is my favorite anime song of all time, it never gets old. Oh despite them saying that its by origa, there's actually a 2nd singer in there, a boy by the name of Benedict Delmaestro he does the part of 'mana du vortes/Aeria gloris'.