======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '159'
                                          'artist'  'George Wilton Ballard'
                                     'text_people'  ''
                                         'release'  'Edison Blue Amberol  2935'
                                           'title'  'Letter That Never Reached Home'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['world war i', '20s', 'twenties', '1920s', '1922']"
                                     'discogstags'  "['pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1916'
                                        'comments'  ''
                                           'genre'  'prerock-vocal-male'
                                             'bpm'  '96.5'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TALB' (Album/Movie/Show title)                     'Edison Blue Amberol  2935'
'TBPM' (BPM (beats per minute))                     '96.5'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal-male'
'TDRC' (Recording time)                             '1916'
'TIT2' (Title/songname/content description)         'Letter That Never Reached Home'
'TKEY' (Initial key)                                '1A'
'TLEN' (Length)                                     '159000'
'TPE1' (Lead performer(s)/Soloist(s))               'George Wilton Ballard'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'pop'
'TXXX:lastfmtags'                                   ['world war i', '20s', 'twenties', '1920s', '1922']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.31 dB'
'TXXX:replaygain_track_peak'                        '0.452568'

========================== row from database ==========================
                                              'id'  1472699
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1916/George Wilton Ballard - Letter That Never Reached Home 1916.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  159
                                           'genre'  prerock-vocal-male
                                        'filesize'  3239885
                                           'mtime'  1621625668
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1916 1916 prerock vocal male
                                      'tag_artist'  George Wilton Ballard
                                     'tag_release'  Edison Blue Amberol  2935
                                       'tag_title'  Letter That Never Reached Home
                                             'bpm'  96.5
                                    'search_title'  'home':5 'letter':1 'never':3 'reached':4 'that':2
                                   'search_artist'  'ballard':3 'george':1 'wilton':2
                                  'search_release'  '2935':4 'amberol':3 'blue':2 'edison':1
                                     'search_rest'  '00oldiepop':5 '1916':6 'country':4 'exotica':2 'jazz':1 'male':9 'oldies':3 'prerock':7 'vocal':8
                                    'search_combo'  '00oldiepop':17 '1916':18 '2935':12C 'amberol':11C 'ballard':8B 'blue':10C 'country':16 'edison':9C 'exotica':14 'george':6B 'home':5A 'jazz':13 'letter':1A 'male':21 'never':3A 'oldies':15 'prerock':19 'reached':4A 'that':2A 'vocal':20 'wilton':7B
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['world war i', '20s', 'twenties', '1920s', '1922']
                                        'tag_date'  1916
                                     'discogstags'  ['pop']

============================== file details ==============================
                                           'mtime'  1621625667.531788  (2021-05-21 21:34:27)
                             'size'  3239885