This document discusses automatic evolutionary music composition using genetic algorithms. It introduces algorithmic composition and evolutionary music composition. Various genetic representations and operators for melody are presented, including representing notes as values and using crossover and mutation. Fitness evaluation is discussed, noting it can consider multiple objectives like stability and tension. An interactive system is described that gets user input on fitness. Finally, examples of experiments evolving 4 and 16 bar melodies under a multi-objective genetic algorithm are shown.