I'm interested in using a small microphone with a Teensy 3.0, roughly like the Arduino Wind Instrument.

First, what voltages do the Teensy 3.0 input pins want? I'm aware the Teensy 2.0 like normal Arduino 5V inputs just fine. The IRemote thread suggests the Teensy 3.0 like 5V inputs too, yes? I presume analog pins should range from 0-5V too, yes?

Second, any recommendations for small microphones good at dealing with low frequencies? I'm wanting to FFT anything from human speech to dance music, not sure if I should use a microphone with a larger range.