Part of it might be bias. I like the Cyan character more than the Frog character (nothing against Frog, I just like Cyan more), and thus maybe the emotional qualities of Cyan's theme have more resonance with me. I also like the use of tambourine (or is it a sleigh bell?) in Cyan's theme.
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I sailed on the wings of time to be with you
I followed this dream of mine
And I'll see it through
It was a dream and a promise that I intend to keep
Right here within my soul so deep