A restorative musical system having a musical composition, which has a plurality of audio elements, a start and an end, and a slow tempo. The plurality of audio elements having a phrase, a plurality of arrangements, a pulsating sound, and a field recording element. The phrase and the pulsating sound adapted to repeat within the musical composition, while the plurality of arrangements is adapted to be introduced in succession. Additionally, the plurality of audio elements is audio mixed to play at a solfeggio frequency and are adapted to cause stereo imaging.

A method implemented by a processor includes receiving performance data including pitch data; determining, based on the pitch data that is included in the received performance data, a key among a plurality of keys; selecting, based on the determined key and the pitch data, a first-type image from among a plurality of first-type images; and displaying the selected first-type image.

A chord information extraction device includes an acquirer, a score type determiner, an extraction region determiner and a chord information extractor. The acquirer acquires score image data representing a reference score. The score type determiner determines a score type of the reference score from among a plurality of predetermined score types based on the acquired score image data. The extraction region determiner determines a chord extraction region in the reference score based on extraction region information that defines a relationship between a plurality of score types and a chord extraction region from which chord information is to be extracted. The chord information extractor extracts the chord information from the acquired score image data based on the determined chord extraction region.

A chord information extraction device includes a character group extractor, a determiner and a corrector. The character group extractor extracts a character group corresponding to chord information from score image data representing a music score. The determiner determines whether the character group extracted by the character group extractor follows a predetermined chord notation rule. In a case where the character group extracted by the character group extractor does not follow the chord notation rule, the corrector corrects the extracted character group to follow the chord notation rule.

An electronic musical interface performs the following: displaying a chord function progression of a first segment of a musical piece that is to be played by a user in a first region of a display via identifiers specifying respective chord functions; playing back an automatic accompaniment of the first segment; receiving user performance data as the user plays the musical note input device along with the playback of the automatic accompaniment; analyzing each chord contained in the obtained user performance data to determine the chord function of each chord the user played; and displaying, in a second region of the display alongside the first region, an identifier that identifies the determined chord function of the chord the user plays so that the user can determine whether the chord function of each chord the user played matches the chord function of the chord displayed in the first region.

A resonance sound signal generation device comprises a designation receiver that receives designation of a pitch, a sound signal instructor that provides an instruction for generating a sound signal corresponding to the designated pitch, a producer that produces a resonance sound signal representing a resonance sound based on a plurality of pitches, a determiner that determines whether another pitch is designated at a time of designation of one pitch, and a resonance sound instructor that instructs the producer to produce a resonance sound signal of the one pitch and a resonance sound signal of the another pitch based on the one pitch and the another pitch when determination is made that the another pitch is designated at the time of designation of the one pitch, and does not instruct the producer to produce resonance sound signals when determination is made that the another pitch is not designated at the time of designation of the one pitch.

A method for creating mash-ups of musical and/or other inputs includes parsing each input into a sequence of elements, which can be of equal length, beat-matching the inputs to make corresponding elements of equal beat length, and combining the elements to form a mash-up. Embodiments align the inputs before combination. The inputs can each include a plurality of tracks. Improved chaotic mapping can be used to substitute elements between tracks of the inputs. The elements, singly or in groups, can be modified before substitution. In other embodiments elements from the input tracks are introduced into a mash-up template whereby different combinations of corresponding elements are included in each mash-up frame. The tracks can be successively introduced into the mash-up and/or successively eliminated in a final Coda section of the mash-up. The combinations can be according to a recognizable pattern, which can be repeated, or determined by improved chaotic mapping.

A harmony generation device and a program for the same which can generate a natural harmony sound are provided. The harmony generation device (1) generates first and second harmony tones to which a voice input through a microphone (M) is shifted in pitch by first and second shift amounts calculated based on both the voice input through the microphone (M) and a chord determined from performance information of an electric guitar (G) input through an input device (34). That is, since the first and second harmony tones can be tones based on the chord of the electric guitar (G) that changes from moment to moment, the harmony sound obtained by mixing the first and second harmony tones with the voice input through the microphone (M) can be a natural harmony sound that is rich in variation according to the chord of the electric guitar (G).

A chord estimation apparatus estimates a first chord from an audio signal, and estimates a second chord by inputting the estimated first chord to a trained model that has learned a chord modification tendency.

A music composition, editing, and playback system and method provides a user interface design based on geometric interpretation of music theory replacing traditional modern music notation with geometric shapes including chords represented by polygons that are colored with colors or hues.