MidiNotate Composer
MidiNotate Composer provides an easy way to create or arrange your own music. You can write your own music, or you can start with music downloaded from the internet and then arrange it to suit yourself. No matter where your inspiration comes from, Composer will help you produce great-looking... Prepare fake book lead sheets for guitar or keyboard. ... After creating your music with MidiNotate Composer, let the software provide the accompaniment as you play or sing along, or set up practice loops to perfect your performance.
http://www.notation.com/MidiNotateComposer10TrialSmallSetup.exe - 5Mb - Download - Screenshot

Echoview Pro
EchoView Pro is designed to provide the functions that your music sequencer software left out. If you are a serious musician or composer, EchoView Pro gives you a powerful set of tools that can help you to fine-tune your art. Here is an overview of some of the features... ... THE VIRTUAL GUITAR is primarily an instrument tuning aid but also useful for creating strummed effects with MIDI. ... THE SONG LENGTH CALCULATOR works in conjunction with the main window to calculate the length of a musical piece in bars or seconds, useful for finding the ideal tempo or number of bars to fit a...
http://www.mirage-avm.com/download/evp600.exe - 2Mb - Download - Screenshot