Title should say it all.
Actually, it surprises me that the site doesn't have this classic song. The song is calm and peaceful enough to lull a baby to sleep, and classic enough that Mario gamers get a tear in the corner of their eyes when they hear it.
At least have a look. Here:
http://www.youtube.com/watch?v=GTI5fmXyFdg&playnext_from=PL&feature=PlayList&p=8FF04FD9D886EDBF&playnext=1&index=12
A short time ago, Ive arranged it to a string quartet :P If you want i get it to you...
I can arrange it for all the intruments you want
I've learned to whistle and hum it already, and the only other instrument I play is piano, so that would suffice.
Thanks a lot for doing it!
This has been completed and is on-site under the name "Swimming."