Here is a little movie about how to make movies like this. The idea is to make slides in PowerPoint that have sentence captions in the main screen and capture that. Then after the capture put in a background music track. (An alternative would be to do voice over. But I'm not crazy about reading the captions, and if you have voice that differs from the text, that could be confusing. ) For anyone who wants to do this themselves, here's the PowerPoint file itself, so you can reverse engineer it and make your own. And for those curious about the music, it's Chopin, Mazurka Op. 7 No. 3 in F minor.