Martin Luther King's iconic I Have a Dream speech is full of allusions. Let's look at a few: Dr. King's speech (1963) was made 100 years after Lincoln's Emancipation Proclamation (1863) that freed all slaves in rebel territories.
There are a number of commercial packages you can use for such purposes. Comsol multiphysics simulation software is a general purpose physics modelling software package that I belive can deal with electromagnitism. The link to their website is http://www.uk.comsol.com. Ansys is another commercial vendor that provides a electromagnetic physics module. There website is http://www.ansys.com.
MIDI sequencer software Sekaiju. Sekaiju is free, open source MIDI sequencer software for creating and editing MIDI data. You can record MIDI keyboard or synthesizer's playing to the computer, and you can compose music to play with your MIDI modules or synthesizers. Sekaiju also can be used as a powerful MIDI editor. â Example music created by using Sekaiju MIDI sequencer (MP3 format, Composer : kuzu) Multiple MIDI data can be opened.