======================== unified (from filesystem) ========================
                                         'bitrate'  '224.0'
                                        'duration'  '285'
                                          'artist'  'atahualpa yupanqui'
                                     'text_people'  ''
                                         'release'  'waldo de los rios-preguntan de donde soy'
                                           'title'  'danza de la luna (yupanqui) preludio'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['argentina', 'folklore', 'folk', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '08'
                                      'tracktotal'  ''
                                            'date'  '1969'
                                        'comments'  ''
                                           'genre'  'loc-samerica-argentina'
                                             'bpm'  '143.823'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'TALB' (Album/Movie/Show title)                     'waldo de los rios-preguntan de donde soy'
'TBPM' (BPM (beats per minute))                     '143.823'
'TCON' (Content type, a.k.a. Genre)                 'loc-samerica-argentina'
'TDRC' (Recording time)                             '1969'
'TIT2' (Title/songname/content description)         'danza de la luna (yupanqui) preludio'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'atahualpa yupanqui'
'TRCK' (Track number/Position in set)               '08'
'TXXX:Mp3gain_minmax'                               '158,176'
'TXXX:Mp3gain_undo'                                 '+003,+003,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['argentina', 'folklore', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.31 dB'
'TXXX:replaygain_track_peak'                        '0.561026'

========================== row from database ==========================
                                              'id'  1494484
                                            'path'  /data/Music/Bulk/00localcharacter/atahualpa yupanqui , waldo de los rios-preguntan de donde soy (1969)/08-danza de la luna (yupanqui) preludio.mp3
                                         'working'  None
                                         'bitrate'  224
                                    'duration_sec'  285
                                           'genre'  loc-samerica-argentina
                                        'filesize'  7991652
                                           'mtime'  1621629906
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter , (1969) 08 loc samerica argentina
                                      'tag_artist'  atahualpa yupanqui
                                     'tag_release'  waldo de los rios-preguntan de donde soy
                                       'tag_title'  danza de la luna (yupanqui) preludio
                                             'bpm'  143.823
                                    'search_title'  'danza':1 'de':2 'la':3 'luna':4 'preludio':7 'yupanqui':5,6
                                   'search_artist'  'atahualpa':1 'yupanqui':2
                                  'search_release'  'de':2 'donde':7 'los':3 'preguntan':5 'rios':4 'riospreguntan':6 'soy':8 'waldo':1
                                     'search_rest'  '1969':1,2 'argentina':5 'loc':3 'samerica':4
                                    'search_combo'  '1969':18,19 'argentina':22 'atahualpa':8B 'danza':1A 'de':2A,11C 'donde':16C 'la':3A 'loc':20 'los':12C 'luna':4A 'preguntan':14C 'preludio':7A 'rios':13C 'riospreguntan':15C 'samerica':21 'soy':17C 'waldo':10C 'yupanqui':5A,6A,9B
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['argentina', 'folklore', 'folk', 'singer songwriter']
                                        'tag_date'  1969
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629905.8956587  (2021-05-21 22:45:05)
                             'size'  7991652