Could someone arrange the song that plays in the introduction? Of course it would be just as well to have the song from the original Ruby/Sapphire instead.
A youtube link would be helpful, since I'm not entirely sure what song you're looking for. Bespinben (http://forum.ninsheetmusic.org/index.php?topic=3391.0) has already arranged the Title Theme for the original RSE, and CLBGM (http://forum.ninsheetmusic.org/index.php?topic=5117.0) arranged three separate pieces that all play in the introduction too, again for the original RSE.
According to the official released soundtrack, the title of the song you're looking for is either "Opening Movie: Setting Out on a Journey in the Hoenn Region", "Opening Movie 2", or "Title Screen: Main Theme". I'm guessing its the last one though.
We need people reading this. (http://forum.ninsheetmusic.org/index.php?topic=1626.0)