======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '140'
                                          'artist'  'Marty Stuart'
                                     'text_people'  ''
                                         'release'  'plastictango tango'
                                           'title'  'Strawberry Tango (edited)'
                                           'quals'  ("['Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-2', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['country', 'bluegrass', 'alt-country', 'folk', 'marty stuart']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'soundtrack-video'
                                             'bpm'  '132.531'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 0000018A 000001B1 00000821 00000B0B 0001119E 00011187 0000705D 00005668 '
 '000186CE 000186CE')
'TALB' (Album/Movie/Show title)                     'plastictango tango'
'TBPM' (BPM (beats per minute))                     '132.531'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-video'
'TIT2' (Title/songname/content description)         'Strawberry Tango (edited)'
'TKEY' (Initial key)                                '8A'
'TMED' (Media type)                                 'DIG'
'TPE1' (Lead performer(s)/Soloist(s))               'Marty Stuart'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['country', 'bluegrass', 'alt-country', 'folk', 'marty stuart']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.81 dB'
'TXXX:replaygain_track_peak'                        '0.737688'

========================== row from database ==========================
                                              'id'  233395
                                            'path'  /data/Music/Bulk/00localcharacter/plastictango/tango/tango 57.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  140
                                           'genre'  soundtrack-video
                                        'filesize'  2243179
                                           'mtime'  1620331765
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 57 soundtrack video
                                      'tag_artist'  Marty Stuart
                                     'tag_release'  plastictango tango
                                       'tag_title'  Strawberry Tango (edited)
                                             'bpm'  132.531
                                    'search_title'  'edited':3,4 'strawberry':1 'tango':2
                                   'search_artist'  'marty':1 'stuart':2
                                  'search_release'  'plastictango':1 'tango':2
                                     'search_rest'  '57':1 'soundtrack':2 'video':3
                                    'search_combo'  '57':9 'edited':3A,4A 'marty':5B 'plastictango':7C 'soundtrack':10 'strawberry':1A 'stuart':6B 'tango':2A,8C 'video':11
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['country', 'bluegrass', 'alt-country', 'folk', 'marty stuart']
                                        'tag_date'  
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1620331765.093295  (2021-05-06 22:09:25)
                             'size'  2243179