The Songs2See game is a great and flexible learning tool for a wide range of instruments typically using a microphone to analyse your playing and rating your performance creating incentive to keep practicing.
For guitars the game will also allow you to use a Rocksmith cable as a mic source!
The interface is neat and clean and stable - possibly just needs an easy stop/start key (such as the spacebar) instead of having to click the play button with the mouse each time you play a song.
Which brings me to the editor.
The Songs2See editor is the companion editing software to the Songs2See game. It is a decent authoring tool for the game allowing you to transcribe your own (or any other) piece of music for use in game - which then becomes like a lesson.
The editor interface is quite buggy and tends to crash regularly - Give your work a filename early on and hit the save button regularly!
The editor is also fairly inflexible - you must choose the song length and tempo when you create the file and it seems that it cannot yet be changed after this so that if you wind up with a blank space at the end or not enough room left to add notes you will have to create a new file to the correct length and copy/paste your work back into the new file.
When authoring music for the guitar there does not seem to be a way of telling the interface which fret/string you want to play a note on so that in game it will flash up in the incorrect location on the fretboard.
A neat feature is that the editor can analyse an mp3 song and auto transcribe it for you working out the tempo and length.
I have no hesitation recommending this software despite it's current flaws as it is a wonderful learning tool for many musical instruments.
Hopefully the developers will add more useful tools into the interface and work out the bugs in it.