Music Software

Finale
http://www.makemusic.com

Finale offers a wide product range from simple to advanced. The full version is often regarded as the most sophisticated notation program available. Includes the Exercise Wizard for creating vocal excersises quickly and easily.

Sibelius
http://www.sibelius.com/education

Includes software for music theory and aural comprehension training. Widely believed to be the easiest music notation software available.