======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '123'
                                          'artist'  'Ricky Nelson'
                                     'text_people'  ''
                                         'release'  'Legendary Masters'
                                           'title'  "My Bucket's Got A Hole In It"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['60s', 'rock', 'oldies', 'rockabilly', 'classic rock']"
                                     'discogstags'  "['electronic', 'garage house']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '1958'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rockabilly'
                                             'bpm'  '98.790'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '58-114 POS 12'
'COMM:ID3v1 Comment:XXX'                            '58-114 POS 12'
'TALB' (Album/Movie/Show title)                     'Legendary Masters'
'TBPM' (BPM (beats per minute))                     '98.790'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rockabilly'
'TDRC' (Recording time)                             '1958'
'TIT2' (Title/songname/content description)         "My Bucket's Got A Hole In It"
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Ricky Nelson'
'TRCK' (Track number/Position in set)               '6'
'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'                                  ['electronic', 'garage house']
'TXXX:lastfmtags'                                   ['60s', 'rock', 'oldies', 'rockabilly', 'classic rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'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'                        '-0.03 dB'
'TXXX:replaygain_track_peak'                        '0.401460'

========================== row from database ==========================
                                              'id'  1518477
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1958/58-114 - Ricky Nelson - My Bucket_s Got A Hole In It.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  123
                                           'genre'  rock-pop-early-rockabilly
                                        'filesize'  4962447
                                           'mtime'  1622659477
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1958 58 114 Bucket_s rock pop early rockabilly
                                      'tag_artist'  Ricky Nelson
                                     'tag_release'  Legendary Masters
                                       'tag_title'  My Bucket's Got A Hole In It
                                             'bpm'  98.79
                                    'search_title'  'a':6 'bucket':2 'buckets':4 'got':5 'hole':7 'in':8 'it':9 'my':1 's':3
                                   'search_artist'  'nelson':2 'ricky':1
                                  'search_release'  'legendary':1 'masters':2
                                     'search_rest'  '00oldiepop':5 '114':8 '1958':6 '58':7 'bucket':9 'country':4 'early':13 'exotica':2 'jazz':1 'oldies':3 'pop':12 'rock':11 'rockabilly':14 's':10
                                    'search_combo'  '00oldiepop':18 '114':21 '1958':19 '58':20 'a':6A 'bucket':2A,22 'buckets':4A 'country':17 'early':26 'exotica':15 'got':5A 'hole':7A 'in':8A 'it':9A 'jazz':14 'legendary':12C 'masters':13C 'my':1A 'nelson':11B 'oldies':16 'pop':25 'ricky':10B 'rock':24 'rockabilly':27 's':3A,23
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  12B
                                           '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-3', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['60s', 'rock', 'oldies', 'rockabilly', 'classic rock']
                                        'tag_date'  1958
                                     'discogstags'  ['electronic', 'garage house']

============================== file details ==============================
                                           'mtime'  1622659476.5883658  (2021-06-02 20:44:36)
                             'size'  4962447