======================== unified (from filesystem) ========================
                                         'bitrate'  '187.475'
                                        'duration'  '138'
                                          'artist'  'Perez Prado & His Orchestra'
                                     'text_people'  ''
                                         'release'  'Mondo Mambo! - The Best Of...'
                                           'title'  'Caballo Negro (Black Horse)'
                                           'quals'  ("['Q-HAP-4', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['mambo', 'latin', 'cuban', 'instrumental', 'jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '19'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'loc-style-mambo'
                                             'bpm'  '138.892'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Mondo Mambo! - The Best Of...'
'TBPM' (BPM (beats per minute))                     '138.892'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-mambo'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Caballo Negro (Black Horse)'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Perez Prado & His Orchestra'
'TRCK' (Track number/Position in set)               '19'
'TXXX:Q-HAP'                                        '4'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['mambo', 'latin', 'cuban', 'instrumental', 'jazz']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.71 dB'
'TXXX:replaygain_track_peak'                        '0.434164'

========================== row from database ==========================
                                              'id'  732092
                                            'path'  /data/Music/Bulk/00localcharacter/Perez Prado/19 - caballo negro (black horse) (vocal).mp3
                                         'working'  None
                                         'bitrate'  187
                                    'duration_sec'  138
                                           'genre'  loc-style-mambo
                                        'filesize'  3256192
                                           'mtime'  1620592823
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 19 caballo negro (black horse) (vocal) loc style mambo
                                      'tag_artist'  Perez Prado & His Orchestra
                                     'tag_release'  Mondo Mambo! - The Best Of...
                                       'tag_title'  Caballo Negro (Black Horse)
                                             'bpm'  138.892
                                    'search_title'  'black':3,4 'caballo':1 'horse':5,6 'negro':2
                                   'search_artist'  'his':3 'orchestra':4 'perez':1 'prado':2
                                  'search_release'  'best':4 'mambo':2 'mondo':1 'of':5,6 'the':3
                                     'search_rest'  '19':1 'black':4,5 'caballo':2 'horse':6,7 'loc':10 'mambo':12 'negro':3 'style':11 'vocal':8,9
                                    'search_combo'  '19':17 'best':14C 'black':3A,4A,20,21 'caballo':1A,18 'his':9B 'horse':5A,6A,22,23 'loc':26 'mambo':12C,28 'mondo':11C 'negro':2A,19 'of':15C,16C 'orchestra':10B 'perez':7B 'prado':8B 'style':27 'the':13C 'vocal':24,25
                                    'tag_tracknum'  19
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-4', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['mambo', 'latin', 'cuban', 'instrumental', 'jazz']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620592822.7028775  (2021-05-09 22:40:22)
                             'size'  3256192