audioToMidi / audioIn

[strobotone]

i find this miditoaudio VST quite usefull : http://www.mindthepressure.org/plugz.php

with it you can control basically any synth using your mic. (and record midi notes accordingly)
It also works with Jeskola WaveIn Interface as input. But a low latency input like via ASIO would work better.

[Evelon]

Neat!
I used to use AmazingMIDI, which is stand-alone. It generated a midi file. This is more convenient (realtime rocks!).

There seems to be a (shareware?) version called Widisoft audio2midi VST aswell.
http://www.widisoft.com/english/widi-au ... i-vst.html