This paper deals with the design and development of the software ‘AUTOMATIC COMPOSER’, a creative tool for the automated generation of polyphonic musical compositions. The problem statement focuses on the need to provide composers with an accessible and versatile tool for musical experimentation. The methodology employed includes the design of algorithms for melody generation, the development of an interactive user interface and the implementation of a system of melodic generators based on mathematical concepts. The main findings and results demonstrate the software’s ability to generate complex and varied scores, allowing users to control multiple aspects of the composition, such as articulations, dynamics, metric sequences, scales, rhythmic durations, instrumental ranges, melodic contours, rests, and metric mixtures. The main conclusion highlights the potential of the software as an innovative tool in the field of automated music composition, offering new creative possibilities for composers and musicians.