So, apparently they were originally going to use a version of the ALttP Lost Wood's music, but instead they went with a version of the Saria's Song Lost Woods.
Here's the beta music: https://www.youtube.com/watch?v=Fs5tP498l1s&feature=related
Here's the beta music: https://www.youtube.com/watch?v=Fs5tP498l1s&feature=related