======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '196'
                                          'artist'  'The Four Lads'
                                     'text_people'  'Al Hoffman/Dick Manning'
                                         'release'  'Moments to Remember: Very Best of the Four Lads'
                                           'title'  'Gilly, Gilly, Ossenfeffer, Katzenellen Bogen By The Sea'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', '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'  "['vocal', 'pop', '50s', 'oldies', 'canadian']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '1954'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '140.433'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '54-126 POS 18'
'COMM:ID3v1 Comment:XXX'                            '54-126 POS 18'
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'TALB' (Album/Movie/Show title)                     'Moments to Remember: Very Best of the Four Lads'
'TBPM' (BPM (beats per minute))                     '140.433'
'TCOM' (Composer)                                   'Al Hoffman/Dick Manning'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1954'
'TIT2' (Title/songname/content description)         'Gilly, Gilly, Ossenfeffer, Katzenellen Bogen By The Sea'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '196226'
'TPE1' (Lead performer(s)/Soloist(s))               'Four Lads'
'TPE2' (Band/orchestra/accompaniment)               'The Four Lads'
'TPUB' (Publisher)                                  'Taragon'
'TRCK' (Track number/Position in set)               '5'
'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'                                   ['vocal', 'pop', '50s', 'oldies', 'canadian']
'TXXX:q-bass'                                       '3'
'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'                        '+1.57 dB'
'TXXX:replaygain_track_peak'                        '0.500748'

========================== row from database ==========================
                                              'id'  1438288
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1954/54-126 - Four Lads - Gilly, Gilly, Ossenfeffer, Katzenellen Bogen By The Sea.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  196
                                           'genre'  prerock-vocal
                                        'filesize'  7846092
                                           'mtime'  1621853325
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1954 54 126 prerock vocal
                                      'tag_artist'  The Four Lads
                                     'tag_release'  Moments to Remember: Very Best of the Four Lads
                                       'tag_title'  Gilly, Gilly, Ossenfeffer, Katzenellen Bogen By The Sea
                                             'bpm'  140.433
                                    'search_title'  'bogen':6 'by':7 'gilly':1,2 'katzenellen':5 'ossenfeffer':3,4 'sea':9 'the':8
                                   'search_artist'  'four':2 'lads':3 'the':1
                                  'search_release'  'best':6 'four':9 'lads':10 'moments':1 'of':7 'remember':3,4 'the':8 'to':2 'very':5
                                     'search_rest'  '00oldiepop':5 '126':8 '1954':6 '54':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'vocal':10
                                    'search_combo'  '00oldiepop':27 '126':30 '1954':28 '54':29 'best':18C 'bogen':6A 'by':7A 'country':26 'exotica':24 'four':11B,21C 'gilly':1A,2A 'jazz':23 'katzenellen':5A 'lads':12B,22C 'moments':13C 'of':19C 'oldies':25 'ossenfeffer':3A,4A 'prerock':31 'remember':15C,16C 'sea':9A 'the':8A,10B,20C 'to':14C 'very':17C 'vocal':32
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  6A
                                           '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-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['vocal', 'pop', '50s', 'oldies', 'canadian']
                                        'tag_date'  1954
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621853324.7580128  (2021-05-24 12:48:44)
                             'size'  7846092