======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '124'
                                          'artist'  'L. Lopez'
                                     'text_people'  ''
                                         'release'  'Underground Mood'
                                           'title'  'Spleen'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-4', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '1972'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk;set-pl-mor'
                                             'bpm'  '110.8'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Underground Mood'
'TBPM' (BPM (beats per minute))                     '110.8'
'TCON' (Content type, a.k.a. Genre)                 ['funk or soul-funk', 'set-pl-mor']
'TDRC' (Recording time)                             '1972'
'TIT2' (Title/songname/content description)         'Spleen'
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'L. Lopez'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '9'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '4'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-3.89 dB'
'TXXX:replaygain_track_peak'                        '0.728420'

========================== row from database ==========================
                                              'id'  1457302
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/Flirt 9 - Underground Mood (1972)/09  luigi lopez - spleen.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  124
                                           'genre'  funk or soul-funk;set-pl-mor
                                        'filesize'  5003156
                                           'mtime'  1620665633
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul Flirt 9 (1972) 09 luigi lopez spleen funk or soul funk;set mor
                                      'tag_artist'  L. Lopez
                                     'tag_release'  Underground Mood
                                       'tag_title'  Spleen
                                             'bpm'  110.8
                                    'search_title'  'spleen':1
                                   'search_artist'  'l':1,2 'lopez':3
                                  'search_release'  'mood':2 'underground':1
                                     'search_rest'  '1972':6,7 '9':5 'flirt':4 'funk':2,12,14 'lopez':9 'luigi':8 'mor':16 'or':11 'set':13,15 'soul':3 'spleen':10 'swing':1
                                    'search_combo'  '1972':12,13 '9':11 'flirt':10 'funk':8,18,20 'l':2B,3B 'lopez':4B,15 'luigi':14 'mood':6C 'mor':22 'or':17 'set':19,21 'soul':9 'spleen':1A,16 'swing':7 'underground':5C
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-4', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1972
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620665632.987119  (2021-05-10 18:53:52)
                             'size'  5003156