======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '165'
                                          'artist'  'Elsie Carlisle'
                                     'text_people'  ''
                                         'release'  'Decca F 5288'
                                           'title'  'Who Made Little Boy Blue'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['double ender 7', 'jazz', '30s', 'female vocalists', 'british']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1934'
                                        'comments'  ''
                                           'genre'  'prerock-vocal-female'
                                             'bpm'  '145.267'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Decca F 5288'
'TBPM' (BPM (beats per minute))                     '145.267'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal-female'
'TDRC' (Recording time)                             '1934'
'TIT2' (Title/songname/content description)         'Who Made Little Boy Blue'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Elsie Carlisle'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['double ender 7', 'jazz', '30s', 'female vocalists', 'british']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.91 dB'
'TXXX:replaygain_track_peak'                        '0.552250'

========================== row from database ==========================
                                              'id'  670841
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1934/Elsie Carlisle - Who Made Little Boy Blue 31-10-1934.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  165
                                           'genre'  prerock-vocal-female
                                        'filesize'  3309276
                                           'mtime'  1621625718
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1934 31 10 1934 prerock vocal female
                                      'tag_artist'  Elsie Carlisle
                                     'tag_release'  Decca F 5288
                                       'tag_title'  Who Made Little Boy Blue
                                             'bpm'  145.267
                                    'search_title'  'blue':5 'boy':4 'little':3 'made':2 'who':1
                                   'search_artist'  'carlisle':2 'elsie':1
                                  'search_release'  '5288':3 'decca':1 'f':2
                                     'search_rest'  '00oldiepop':5 '1934':6 '31':7 'country':4 'exotica':2 'female':10 'jazz':1 'oldies':3 'prerock':8 'vocal':9
                                    'search_combo'  '00oldiepop':15 '1934':16 '31':17 '5288':10C 'blue':5A 'boy':4A 'carlisle':7B 'country':14 'decca':8C 'elsie':6B 'exotica':12 'f':9C 'female':20 'jazz':11 'little':3A 'made':2A 'oldies':13 'prerock':18 'vocal':19 'who':1A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  7A
                                           '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-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['double ender 7', 'jazz', '30s', 'female vocalists', 'british']
                                        'tag_date'  1934
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621625717.9233503  (2021-05-21 21:35:17)
                             'size'  3309276