I'm a singer and have been fronting bands for years and years at this point
. If I had the ability to purchase software like this back when I started singing, my gains would have been achieved far more quickly. Put quite simply, when you can actually 'see' the notes you need to improve upon, you can make that improvement more quickly because it may take you a little more time to develop your ear when you're just learning to sing. Karaoke PC software like Singing Superstar are tools that can help all people learn how to sing or learn how to sing better.