This dataset contains 3,000 artificial music audio tracks with rich annotations. It is based on real instrument samples and generated by algorithmic composition with respect to music theory. It provides full mixes of the songs as well as single instrument tracks. The midis used for generation are also available. The annotation files include: Onsets, Pitches, Instruments, Keys, Tempos, Segments, Melody instrument, Beats, and Chords. A presentation paper was published open-access in EURASIP Journal on Audio, Speech, and Music Processing. Current development and source code of the generator tool can be found on GitHub. For a tiny version for demonstration and testing purposes see: zenodo.6771120