======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '174'
                                          'artist'  'Al Bowlly'
                                     'text_people'  ''
                                         'release'  'Decca F 3194'
                                           'title'  'Love Is The Sweetest Thing (+ studio orchestra)'
                                           '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-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['30s', 'oldies', 'jazz', 'pop', '1930s', 'crooner']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1932'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '115.7'
                                             'key'  '3B'
                                        '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)                     'Decca F 3194'
'TBPM' (BPM (beats per minute))                     '115.7'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1932-10-07'
'TIT2' (Title/songname/content description)         'Love Is The Sweetest Thing (+ studio orchestra)'
'TKEY' (Initial key)                                '3B'
'TLEN' (Length)                                     '174000'
'TPE1' (Lead performer(s)/Soloist(s))               'Al Bowlly'
'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:lastfmtags'                                   ['30s', 'oldies', 'jazz', 'pop', '1930s', 'crooner']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.78 dB'
'TXXX:replaygain_track_peak'                        '0.521272'

========================== row from database ==========================
                                              'id'  1458729
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1932/Al Bowlly - Love Is The Sweetest Thing (Studio Orchestra) 7-10-1932.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  174
                                           'genre'  prerock-band
                                        'filesize'  2856497
                                           'mtime'  1620559933
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1932 (Studio Orchestra) 7 10 1932 prerock band
                                      'tag_artist'  Al Bowlly
                                     'tag_release'  Decca F 3194
                                       'tag_title'  Love Is The Sweetest Thing (+ studio orchestra)
                                             'bpm'  115.7
                                    'search_title'  'is':2 'love':1 'orchestra':7,8 'studio':6 'sweetest':4 'the':3 'thing':5
                                   'search_artist'  'al':1 'bowlly':2
                                  'search_release'  '3194':3 'decca':1 'f':2
                                     'search_rest'  '00oldiepop':5 '1932':6 '7':11 'band':13 'country':4 'exotica':2 'jazz':1 'oldies':3 'orchestra':9,10 'prerock':12 'studio':7,8
                                    'search_combo'  '00oldiepop':18 '1932':19 '3194':13C '7':24 'al':9B 'band':26 'bowlly':10B 'country':17 'decca':11C 'exotica':15 'f':12C 'is':2A 'jazz':14 'love':1A 'oldies':16 'orchestra':7A,8A,22,23 'prerock':25 'studio':6A,20,21 'sweetest':4A 'the':3A 'thing':5A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  3B
                                           '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-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['30s', 'oldies', 'jazz', 'pop', '1930s', 'crooner']
                                        'tag_date'  1932
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559933.0764139  (2021-05-09 13:32:13)
                             'size'  2856497