======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '190'
                                          'artist'  'Georgia White'
                                     'text_people'  ''
                                         'release'  'DOCD 5301'
                                           'title'  'Someday, Sweetheart'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-3', 'Q-LOCALNESS-3', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'Q-PLAY-3', 'q-bass-1', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-1', 'q-drums-1', 'q-other-2', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues', 'boogie', 'female vocalists', 'delta blues']"
                                     'discogstags'  "['blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  '1936'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '112.508'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'DOCD 5301'
'TBPM' (BPM (beats per minute))                     '112.508'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDRC' (Recording time)                             '1936'
'TIT2' (Title/songname/content description)         'Someday, Sweetheart'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Georgia White'
'TPE2' (Band/orchestra/accompaniment)               'Georgia White'
'TPUB' (Publisher)                                  'Document'
'TRCK' (Track number/Position in set)               '15'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'blues'
'TXXX:lastfmtags'                                   ['blues', 'boogie', 'female vocalists', 'delta blues']
'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'                                      '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.29 dB'
'TXXX:replaygain_track_peak'                        '0.348274'

========================== row from database ==========================
                                              'id'  672313
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/DOCD 5301 - Georgia White 01 (1930-1936) 128/Georgia White - 01-15 - Someday, Sweetheart (19360117).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  190
                                           'genre'  prerock-jb-blues
                                        'filesize'  3049366
                                           'mtime'  1620402264
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country (1930 1936) 128 15 (19360117) prerock jb blues
                                      'tag_artist'  Georgia White
                                     'tag_release'  DOCD 5301
                                       'tag_title'  Someday, Sweetheart
                                             'bpm'  112.508
                                    'search_title'  'someday':1,2 'sweetheart':3
                                   'search_artist'  'georgia':1 'white':2
                                  'search_release'  '5301':2 'docd':1
                                     'search_rest'  '128':9 '1930':5,6 '1936':7,8 '19360117':10,11 'blues':14 'country':4 'exotica':2 'jazz':1 'jb':13 'oldies':3 'prerock':12
                                    'search_combo'  '128':16 '1930':12,13 '1936':14,15 '19360117':17,18 '5301':7C 'blues':21 'country':11 'docd':6C 'exotica':9 'georgia':4B 'jazz':8 'jb':20 'oldies':10 'prerock':19 'someday':1A,2A 'sweetheart':3A 'white':5B
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'boogie', 'female vocalists', 'delta blues']
                                        'tag_date'  1936
                                     'discogstags'  ['blues']

============================== file details ==============================
                                           'mtime'  1620402264.4136994  (2021-05-07 17:44:24)
                             'size'  3049366