Does that "majestic" sounding tune in Great Cave Offensive count as a version of Green Greens? If so, I vote for that one.
And personally, I hated the Epic Yarn version of Green Greens. The slightly-out-of-tune whistling really grated on my eardrums. Butter Building is very good in KEY, though; that's probably the best BB has sounded since its original use in Kirby's Adventure.
My name is Mottman, and I approve this message. "Champions don't whine, they win!" - Xenoblade Chronicles