What happens to my harmony when I play chords like the two-note E5, a rootless chord, or chord inversions?
To answer this question, it is first important to understand that musIQ harmony is not generated by simply recognizing a chord and then using some sort of table look-up to find a harmony note. This type of approach would be extremely sensitive to power chords, rootless chords, and similar chord patterns. Our technology creates harmony lines by analyzing the current song over many time scales. At the longest time scale, the accompaniment and melody notes give rise to what is usually refered to as the “key and scale” of a song. At the shortest time scale, the current chord being played dominates. Between these two time scales you may find anything from several bars that go outside of the song’s main mode, to entire choruses that are in a completely different mode. Because of the multi-timescale analysis, we can avoid having to rely only on the extremely localized note patterns (as is evident in the blocky sound typical of MIDI chordal mode in existing harmonizers). At the same time, we c
