This doctoral thesis focuses on algorithmic music composition in real-time.

After reviewing his previous work on algorithmic music (Musical Fractals, a non-realtime, non-interactive algorithmic music system; Orbis Musicae, a simple realtime interactive algorithmic music system; Piano Fractal, a realtime non-interactive algorithmic music system; and Fractal Composer, a complex realtime interactive algorithmic music system), Hinojosa discusses algorithmic composition, active instruments (considering passive instruments as those that only react to a human gesture, and active instruments to real time interactive algorithmic music systems) versus intelligent instruments (those who exhibit and intelligent behaviour, collaborating with the performer), intuitive and non-intuitive software, mapping, and authorship.