Supernatural Story Finders

OMG IT'S CHRISTMAS BREAK! So since I have a month off of school to do nothing but read, I have a HUGE request for you all. Any and all help is appreciated! All lengths, ratings, and kinks are welcome for the general searches. No WIPs please, but self recs are happily accepted.

1. My first search is for a specific fic I read the back in, like, May. It is a Sam/Dean/Cas fic where Sam and Dean are in a pre-established relationship. Cas is human and Sam and Dean are trying to help Cas out. Cas is kinda, like, coming on to Dean and Sam (Dean especially) but I don't think he really knew it. Dean and Sam both decided they aren't threatened by Cas because he is innocent and harmless and they both end up sleeping with him as well as some threesomes. I remember a few scenes - There is a sex store and Cas wants to buy porn but Sam and Dean don't think that's a good idea; They are at Walmart buying Cas new clothes and the woman working by the dressing rooms is hitting on Cas. When she realizes they are gay she goes all crazy Christian on them; They are at a bar and there's a brawl Dean is fighting in and Sam and Cas are at a both watching. They tell the waitress they're both seeing someone and when she asks who they both point to Dean and she says that's "kinky". I hope this is enough to go on because I'd really like to reread this.
- FOUND by the amazing jadekirk, it is "Angel In Exile" by huntress69 found here: http://huntress69.livejournal.com/253601.html

2. I have requested this before, but I didn't really get much for it, so I'm going to ask again. I am looking for some cute, adorable wee!chester fics where Sam has a blanket and sucks his thumb and Dean teases him about it. Maybe John yells at him for it because he views it as a sign of weakness? It can be any age, but it would be a bonus if Sam still does it as he gets older and he becomes very secretive and extremely self conscious about it. It can be gen or wincest, but I would love you forever if its a sweet wincest fic.

3. I am looking for crack fics. Rec me the best, funniest fics you have. I don't care what other genres they are in, I just want to shoot milk out my nose. My fav pairings are J2 and wincest, but I will take anything as long as it is slash.

4. I'm looking for any fics based around music. By that, I don't mean where they are musicians in a rock band. I mean I want something where the boys play musical instruments, like in an orchestra, wind ensemble, choral groups, ect. I'm talking about classical music. Bonus points if the story is set where they are studying this in school (yes, I am well aware of my obsession with school fics and that I throw it into every request I make). You are a God if you know of a story where they are at a private music school (something similar to the manga 'Alice the 101st', if anyone's read that). J2 and wincest are preferable for this.

I apologize for the length of this request :/