There is a classical piece often used in nature scenes in movies, in fact, so often that it has become a cliche and used to humorous effect. I seem to remember it in an animated short called something like “Godzilla and Bambi.”
I created a midi file and posted it to www.seiglefamily.com/data/nature.mid
Anyone know what it’s called, composer, etc.?
I want to use part of it as a soundtrack for a home video.
ETA: Bambi Meets Godzilla uses a different tune.
The music in “Bambi Meets Godzilla” was “The William Tell” overture, not the Lone Ranger part, but the part before that.
Edvard Grieg - Peer Gynt
ETA You Tube link: http://www.youtube.com/watch?v=PAbwMGZtIsY
Bingo! Thank you. Can’t believe how fast this got answered. I should know by now that Dopers know everything!! 
Right, you’re talking about two different pieces. Bambi was from William Tell, but your midi tune was from Peer Gynt.
…which I have associated all my life with Popeye crawling out of the sewer in the 1943 cartoon Happy Birthdaze.
One of my favourite versions - Spike Jones.
Here is what I used it for, at about 5:15, but it needs some context so if you must jump into the middle, try 4:45. Nod to Twoflower in the closing credits.