======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '142'
                                          'artist'  'Dave Evans'
                                     'text_people'  ''
                                         'release'  'Sad Pig Dance'
                                           'title'  'Veronica'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-OLDST-1', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'Q-PLAY-2', 'q-bass-1', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-4', 'q-chart-1', 'q-drums-1', 'q-other-3', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['3 star', 'classic rock', 'hard rock', 'folk', 'under 2000 listeners']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  ''
                                            'date'  '1974'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country-bluegrass'
                                             'bpm'  '138.797'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 000001B5 000001D9 00001616 000015D7 000186CE 000186B7 00007502 000068CF '
 '000186B7 000186B7')
'TALB' (Album/Movie/Show title)                     'Sad Pig Dance'
'TBPM' (BPM (beats per minute))                     '138.797'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country-bluegrass'
'TDRC' (Recording time)                             '1974'
'TENC' (Encoded by)                                 'Acoustica Mp3 Cd Burner'
'TIT2' (Title/songname/content description)         'Veronica'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dave Evans'
'TRCK' (Track number/Position in set)               '04'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['3 star', 'classic rock', 'hard rock', 'folk', 'under 2000 listeners']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+2.10 dB'
'TXXX:replaygain_track_peak'                        '0.646390'

========================== row from database ==========================
                                              'id'  1366730
                                            'path'  /data/Music/Bulk/00localcharacter/dave evans - sad pig dance/04 Veronica.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  142
                                           'genre'  loc-namerica-country-bluegrass
                                        'filesize'  4620519
                                           'mtime'  1621629911
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter dave evans sad pig dance 04 loc namerica country bluegrass
                                      'tag_artist'  Dave Evans
                                     'tag_release'  Sad Pig Dance
                                       'tag_title'  Veronica
                                             'bpm'  138.797
                                    'search_title'  'veronica':1
                                   'search_artist'  'dave':1 'evans':2
                                  'search_release'  'dance':3 'pig':2 'sad':1
                                     'search_rest'  'bluegrass':9 'country':8 'dance':5 'dave':1 'evans':2 'loc':6 'namerica':7 'pig':4 'sad':3
                                    'search_combo'  'bluegrass':15 'country':14 'dance':6C,11 'dave':2B,7 'evans':3B,8 'loc':12 'namerica':13 'pig':5C,10 'sad':4C,9 'veronica':1A
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-3', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['3 star', 'classic rock', 'hard rock', 'folk', 'under 2000 listeners']
                                        'tag_date'  1974
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1621629911.360585  (2021-05-21 22:45:11)
                             'size'  4620519