1)   Click MusicalKEYS 3
Click MusicalKEYS is a free onscreen MIDI musical keyboard. With 127 different instruments, you can play the best music of your choice. Click MusicalKEYS can record your favorite tunes so that you can replay them later.

 2)   Music Tutor 1.0
Music Tutor is an application for a user to train his/her own voice. The main purpose of this software is to analyze voice data gathered from the microphone and display the results in real-time, so that the user may appraise his/her voice.