This is the introduction of each of Jimmy's four personalities, The Romantic (Is it me, for a moment?), The Beggar (Love Reign O''er Me), The Lunatic (Bell Boy), and The Tough Guy (Can you see the real me?). So it gives you the four themes, and if you listen closely to the album, you can hear each one of them repeated at different points, especially the "Is it me?" theme, since that's kind of the point of the album: Jimmy wondering who he really is.
This is the introduction of each of Jimmy's four personalities, The Romantic (Is it me, for a moment?), The Beggar (Love Reign O''er Me), The Lunatic (Bell Boy), and The Tough Guy (Can you see the real me?). So it gives you the four themes, and if you listen closely to the album, you can hear each one of them repeated at different points, especially the "Is it me?" theme, since that's kind of the point of the album: Jimmy wondering who he really is.