======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '169'
                                          'artist'  'Merline Johnson'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Don't Have To Sing The Blues"
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-2', 'Q-JZFKS-3', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['soul', 'blues', 'all', 'oldies', 'classic blues']"
                                     'discogstags'  "['blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1939'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '90.3'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TBPM' (BPM (beats per minute))                     '90.3'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDRC' (Recording time)                             '1939-08-31'
'TIT2' (Title/songname/content description)         "Don't Have To Sing The Blues"
'TKEY' (Initial key)                                '7B'
'TLEN' (Length)                                     '169000'
'TPE1' (Lead performer(s)/Soloist(s))               'Merline Johnson'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'blues'
'TXXX:lastfmtags'                                   ['soul', 'blues', 'all', 'oldies', 'classic 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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.32 dB'
'TXXX:replaygain_track_peak'                        '0.458424'

========================== row from database ==========================
                                              'id'  1497148
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1939/Merline Johnson - Don_t Have To Sing The Blues 31-8-1939.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  169
                                           'genre'  prerock-jb-blues
                                        'filesize'  3430349
                                           'mtime'  1620401831
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1939 Don_t 31 8 1939 prerock jb blues
                                      'tag_artist'  Merline Johnson
                                     'tag_release'  None
                                       'tag_title'  Don't Have To Sing The Blues
                                             'bpm'  90.3
                                    'search_title'  'blues':8 'don':1 'dont':3 'have':4 'sing':6 't':2 'the':7 'to':5
                                   'search_artist'  'johnson':2 'merline':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1939':6 '31':9 '8':10 'blues':13 'country':4 'don':7 'exotica':2 'jazz':1 'jb':12 'oldies':3 'prerock':11 't':8
                                    'search_combo'  '00oldiepop':15 '1939':16 '31':19 '8':20 'blues':8A,23 'country':14 'don':1A,17 'dont':3A 'exotica':12 'have':4A 'jazz':11 'jb':22 'johnson':10B 'merline':9B 'oldies':13 'prerock':21 'sing':6A 't':2A,18 'the':7A 'to':5A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['soul', 'blues', 'all', 'oldies', 'classic blues']
                                        'tag_date'  1939
                                     'discogstags'  ['blues']

============================== file details ==============================
                                           'mtime'  1620401831.2716012  (2021-05-07 17:37:11)
                             'size'  3430349