MyABCD 

MyABCD is an animated, educational, children's program which includes the alphabet, numbers to 20, 18 simple games and 10 musical instruments. It contains original music, sound effects and animation which pre-schoolers will learn from and enjoy.
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MusicGoals by Eye and Ear 

ear training, sight reading, and music theory applied to piano, guitar, violin, viola, cello, and bass - MusicGoals offers study, practice, and testing to improve skills, gain knowledge of instruments and music theory, and train the musical ear.
music theory software ear training software sight reading advanced placement improve skills chords scales intervals piano guitar keyboard violin viola

MusicGoals Demo 

ear training, sight reading, and music theory applied to piano, guitar, violin, viola, cello, and bass - MusicGoals offers study, practice, and testing to improve skills, gain knowledge of instruments and music theory, and train the musical ear.
music theory software ear training sight reading advanced placement improve skills chords scales intervals piano guitar keyboard violin viola