It's REALLY good! You can get some really nice songs out of it like 61615 and 54321 but eventually the song just gets caught in a loop and never changes. Also, the tempo at which songs go by is juuuuust to slow for it's own good, it makes it feel like the program skips beats and it makes it really obvious that there are tiny gaps between notes. Though sometimes it does work like Oblivion Insects.