Are you a musician or a music educator? I think you would like this website that I found when I was searching. The finalemusic.com which is the world leader in software and systems for music educators and musicians.
Their world’s best selling music notation software Finale has complete music practice system that features Intelligent Accompaniment® and the world’s largest interactive accompaniment library
Finale’s have different cool feature that I know you would love and enjoy. It has Record/import Audio, Enchanced Setup Wizard music engraving, expanded Music XML Support, More Powerful Templates, Embedded Graphics and many more.