no, the much derided brassiliser is, in fact, a voice to trumpet converter, one of the more strange new ideas to appear on a KN.
If you only know a song by ear and want to figure out the melody and key without random playing on the keyboard, you could try recording the brassiliser into the pc, and then trying one of the pitch to midi programs like Wav2Mid. These tend to be problematical on your voice because of the wide vibrato and glissando etc but strangely worked a little better off the brassiliser output when I tried an experiment.
Old hands will react in shock and horror - a use was found for the brassiliser!!!
Don't worry, they left it off the 7000