= Ground Truth for Segmentation of Symbolic Music =

Music segmentation and structural analysis are crucial issues in Music Information Retrieval. It is, however, difficult to find ground truth, especially for MIDI data. This page contains ground truth for 13 music pieces belonging to differenc genres. Manual segmentation has been performed for all tracks of each music piece seperately, still considering the global structure of each song. The following sections list the songs that are available and explains the structure of the ground truth data.

== Songs ==

The following table gives an overview about the songs that are available:

||          '''Songtitle'''          ||                 '''Filename'''                ||         '''Artist'''        ||      '''Genre'''    || '''Number of Tracks''' ||
|| Tango A                           || ab-astor_tango.mid                            || Anonymous                   || Tango               || 8                      ||
|| Act Naturally                     || Act_Naturally.mid                             || Buck Owens                  || Traditional Country || 10                     ||
|| Come Back to Me                   || comeback.mid                                  || Janet Jackson               || Adult Contemporary  || 12                     ||
|| Dance                             || DANCE.mid                                     || Anonymous                   || Techno              || 4                      ||
|| Down                              || Down.mid                                      || 311                         || Metal               || 10                     ||
|| We Have all the Time in the World || louis_armstrong-all_the_time_in_the_world.mid || Louis Armstrong             || Smooth Jazz         || 11                     ||
|| Moving On Up                      || m_people-moving_on_up.mid                     || M People                    || Dance Pop           || 11                     ||
|| My Girl                           || my_girl.mid                                   || Otis Redding                || Soul                || 9                      ||
|| Red Wine                          || redwine.mid                                   || UB40                        || Reggae              || 9                      ||
|| Slippin' and Slidin               || Slippin_and_Slidin.mid                        || Little Richard              || Rock and Roll       || 5                      ||
|| Stop in the Name of Love          || supremes_stop_in_the_name_of_love.mid         || Diana Ross and the Supremes || Soul                || 13                     ||
|| Tennesse Waltz                    || Tennessee_Waltz.mid                           || Roy Acuf                    || Traditional Country || 8                      ||
|| YMCA                              || YMCA.mid                                      || Village People              || Dance Pop           || 16                     ||

All songs were taken from the [http://jmir.sourceforge.net/Codaich.html Bodhidharma MIDI data set].

== XML Format ==

The ground truth for each song is given in an XML file named like the corresponding '.mid' file but with extension '.xml'. The following elements are contained in each XML file:

||  '''Element'''  ||                                    '''Description'''                                       ||    '''Example'''    ||
|| filename        || name of the corresponding MIDI file                                                        || Act_Naturally.mid   ||
|| title           || title of the composition                                                                   || Act Naturally       ||
|| artist          || artist of the composition                                                                  || Buck Owens          ||
|| nr_tracks       || number of tracks within the composition                                                    || 10                  ||
|| duration_beats  || duration of the composition given in beats                                                 || 460.0               ||
|| genre           || genre the composition belongs to                                                           || Traditional Country ||
|| tracks          || collection of track elements                                                               || -                   ||
|| track           || single track of the composition                                                            || -                   ||
|| tracktitle      || title of the track (= title of the composition + ascending number)                         || Act_Naturally_1     ||
|| instrument      || instrument the track is assigend to (sometimes unknown)                                    || Vocal Layer         ||
|| segmentation    || collection of hierarchical segmentation levels                                             || -                   ||
|| level           || collection of segment groups containing non-overlapping segments on one hierarchical level || -                   ||
|| segment_group   || collection of similar segments                                                             || -                   ||
|| segment         || occurence of a repeating pattern within a segment group                                    || -                   ||
|| start_note      || first note within the segment (simultaneous notes count as one)                            || 134                 ||
|| start_beat      || beat where the segment starts                                                              || 247.5               ||
|| end_note        || last note within the segment (simultaneous notes count as one)                             || 265                 ||
|| end_beat        || beat where the segment ends                                                                || 435.0               ||

All 13 XML files can be downloaded here.