You can control the parameters of your sound designs in real time using MIDI keyboard events and/or continuous controllers. The MIDI inputs can be live (from a keyboard or set of faders), or they can be generated by a sequencer or read from a MIDI file.
In this example, the incoming MIDI pitches are being remapped to the frequencies corresponding to a pentatonic scale. The resulting frequencies are controlling a Celtic harp (196k) sample.
In this example, MIDI key-down events trigger a function generator which, in turn, is controlling a morph (119k) between a violin and a voice singing "virtue".