I hate the pronunciation of A Song for XX. It sounds so weird to me to say "A Song for"
But I think "More than" sounds nice.
And yeah, it's basicly from CMs for the ASFXX album you hear it, I don't remember how I knew More than though ^_^
Think about it.. if ayu called a song More than? Weird. It should be Plus though, I mean, it is what it's literally named? Hmm..