How do I add 2 text boxes in one clip: Movie Maker???

I am trying to add 2 text boxes in one clip, i have googled a few ways to find it, but the only way i have found is to export the video, then add the text to THAT video. THIS DOES NOT WORK FOR ME! Mainly, because i am making a video that has words synced up with the music, 

PLEASE HELP! if this is impossible, can someone tell an ACTUAL person that works at microsoft?

Thanks, GeorgeB!

P.S Can you add two sound files to the one clip, can i do that?