The Prelude is also known as "Mr. Uematsu's Arpeggio" and "The Arpeggio That Wouldn't Die." Beginning with FF2/4, the a bit more was added to the arpeggio, a bit of music with violins, flutes, trumpets, and/or bagpipes (I think that bit in FF3/6's prelude sounded like bagpipes). FF7 also incorporated the arpeggio into the song "Anxious Heart."