MusicMirror

MusicMirror is a lightweight software application developed specifically for helping you load MIDI files and play them using either a horizontal or vertical reverse mode by changing the sequence of notes. This audio utility can be deployed on all Windows versions out there.

Simple looks

You are welcomed by a clean and straightforward design that embeds only a few configuration settings. You can also appeal to a help manual in case you want to find out more details about the dedicated parameters.
Files can be imported in the working environment using the built-in browse button (the drag-and-drop support is not implemented).

MIDI playback capabilities

MusicMirror gives you the possibility to load a user-defined MIDI file (SMF) and listen to it directly in the main window thanks to the integrated player. Plus, you are allowed to play or stop the current selection.
If you activate the vertical reverse playing mode, the application alters the sequence of notes by changing the position of higher notes to lower notes and vice versa. When it comes to horizontal reverse playback capabilities, the time line is reversed and the first note becomes the last note (and vice versa).
A few configuration settings are implemented for helping you raise the octave while the vertical reverse mode is activated and save the newly generated audio files to a file on the disk.
Tests have shown that the utility carries out a task quickly and without errors. It offers very good output quality. It does not eat up a lot of CPU and memory resources so the overall performance of the computer is not affected.

Final thoughts

The bottom line is that MusicMirror is a handy program that helps you modify the way WAV files are played without having to go through complex configuration settings. It can be configured by less experienced users and professionals alike.
Limitations: You can not use save function with trial use. You can only play tunes.