What will happen when my heart stops beating?" Momo asked. When that moment comes," said the professor, "time will stop for you as well. Or rather, you will retrace your steps through time, through all the days and nights, myths and years of your life, until you go out through the great, round, silver gate you entered by." What will I find on the other side?" The home of the music you've sometimes faintly heard in the distance, but by then you'll be part of it. You yourself will be a note in its mighty harmonies.