Music MasterWorks
Music MasterWorks is a MIDI music composing program. Allows you to compose music just by singing into your PC microphone. It will also analyze your singing. You can record, edit, playback and print sheet music as well. Compose in either staff or piano roll notation.
http://www.musicmasterworks.com/MusicM382.exe - 2Mb - Download - Screenshot

Lvbs X
This software works as a composer, not as a tool for composing. That is a fundamental difference! Lvbs X composes music - ALL BY ITSELF - without any help from you. Lvbs X composes music. Lvbs X is VIRTUAL MUSIC COMPOSER. You do not have to know anything - ANYTHING AT ALL - about composing,... Essentially, the program algorithm is designed to control and, consequently, to obtain the well-balanced and the best possible relationship between the choice of a note and its duration. ... This music belongs to you.
http://www.lvbsx.com/basic/Lvbsx_basic.zip - 16Mb - Download - Screenshot

Noise Station
Noise Station is music creation software. A synthesizer and sequencer, the software is an advanced system for creating professional music with no other equipment needed. Noise station was designed to produce high quality music on any PC by emulation. ... The program uses engines, a component that creates or modifies sound to create effects on an instrument, track, or song basis. ... Real time recording doesn't exist, instead events are layed down almost like the music is being programmed, just like in tracker software.
http://www.cornutopia.co.uk/software/nssetup.exe - 4Mb - Download - Screenshot

ArtWonk
ArtWonk is a MIDI and graphics program that produces MIDI music and paint graphics based on algorithmic rules that you interactively create by connecting modules (graphical objects that represent functions and processes) in real time, adjusting the parameters as you go, in an interactive drag... ArtWonk is essentially a program language specialized for creating music and visuals, intended to be used by artists and musicians. ... ArtWonk is the successor to a long line of graphical, modular, and interactive algorithmic composing programs created by John Dunn that were inspired by the big...
http://algoart.com/download/software/artwnk20.zip - 8Mb - Download - Screenshot

QuickScore Elite Level II
QuickScore Elite Level II is Sion Software's premier music composition and notation software - incorporating scoring, arranging, MIDI and audio sequencing and recording. Use it to create publication-quality scores, musical content for the desktop and world wide web, audio CDs, MP3s and... This is the program that Electronic Magazine awarded their 1995 and 1998 Editors' Choice for music notation software. ... " - Electronic Musician “If you are serious about composing music, QuickScore is the best package that I have ever seen.
http://www.sionsoft.com/qse2demo.zip - 4Mb - Download - Screenshot

MID 2 WAV
Convert MID files into WAV files with one click! MIDI files only contain information about the notes to play. This means mid files will play different on every sound card and you can not burn mid files on a music CD or copy it to your mp3 player. This program records the midi output of your... If you compose your own music with a midi sequencer you will be able to burn your music on a music cd or import it to your wave editor to mix it with other samples.
http://www.cadkas.de/mid2wav!.exe - 340Kb - Download - Screenshot

FlexiMusic Kids Composer
FlexiMusic Kids Composer is an amazing program that allows you to create music on your PC. Using a paintbrush, an erase tool and a mouse, it's a fun and easy way to make songs come alive. Select music samples called "Beats", and tunes called "Stars," then paint them on a track. ... FlexiMusic Kids Composer is best suited for children who would like to practice mixing a variety of instruments, and composing their own music. ... When you buy FlexiMusic Kids Composer, we will include the amazing FlexiMusic Kids Music orld program for your 5 year olds.
http://www.flexmusic.com/download/FlexiMusicKidsComposerSetup.exe - 6Mb - Download - Screenshot

Easy Music Composer Free
Easy Music Composer Free is a automatic composer. You can make wonderful songs easily using this program. You can compose a song without musical knowledge. You can select a pattern(Rhythm,Bass and Drum). You can setting a tone and volume on each bar. ... ) (4 channels are used for chords. ... ) (1 channel is used for drum. ... (1 channel is used for melody. ... ) (1 channel is used for bass. ... You can compose a song of 7 channels.
http://www5f.biglobe.ne.jp/~mcs/emcf.zip - 1Mb - Download - Screenshot

Fractal Tune Smithy
Create beautiful music effortlessly - and discover your talent as a budding composer! Choose one of the tunes that come with the program or enter a very short musical phrase of a few notes, and hear it transformed into an intricate tracery of music. The music is fractal which means it is highly... Suitable even for complete newbies to composing - and there is no need to be able to read music notation. ... Try tunings for Indonesian Gamelans, or Indian music with drones. ... Play in any of the tunings and temperaments yourself with a music keyboard.
http://www.robertinventor.com/FTS_Setup.exe - 4Mb - Download - Screenshot

Compose music by chords
Compose music tool helps to create melodies. The program represents graphically the structure of melody being created. Boundaries of motives, phrases and sentences are clearly shown. The program provides the following methods of motive development: sequence, variaton, repetition, extraction,... The program supports two file formats: '*. ... The editor has a mechanism that prompts to a user how and when to resolve the non-chords tones. ... ear training. ... ptt' - own xml-based format; '*. ... mid' format.
http://www.ababasoft.com/prg/palette4_2.exe - 2Mb - Download - Screenshot