Hey i was wanting to learn how to sing a Japanese song brfore i go this sumer so if you know a website or you know a song tell me please and thank yous??It can be a short song i would love it it it was short and easy!!

go here
http://www.megchan.com/

it currently has 3533 romanized lyrics and 1850 translated lyrics by 493 artists.
it is the best site for japanese and english lyrics and the pronounciation.

Well, if you want to know just one song, there's a really good website for the old classic "Ue o muite arukou" by Kyu Sakamoto.

It's got the mp3's of nearly every rendition of the song ever recorded, the lyrics in both English and Japanese, and lots of information.

http://www.maddmansrealm.com/sukiyaki/

Not to mention that it's catchy as heck. But again, it's sort of old- what we'd call "doo-wop" in English, I guess. But I love it!