It seems that Synth block tries to understand the pitch directly from the input, ignoring every block before it. If I put a pitch before the synth, the note remains the same.
By the way... I wonder if you'll ever start thinkin about bass players! Note recognition doesn't work (or works very badly) lower than low G note! That's a problem with pitch shifters and a lot of effects.
Same problem with Synth, I cannot play lower than low G cause it doesn't recognize the note. I was trying a workaround by putting an octave pitch before the synth block and than lowering the synth pitch by 1 octave again, but as I mentioned before, it seems that synth block doesn't "listen" to the blocks before it, but only from the input directly.