======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '132'
                                          'artist'  'Ricky Nelson'
                                     'text_people'  ''
                                         'release'  'Legendary Masters'
                                           'title'  'Just A Little Too Much'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', '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'  '12'
                                      'tracktotal'  ''
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rockabilly'
                                             'bpm'  '91.846'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '59-086 POS 9'
'COMM:ID3v1 Comment:XXX'                            '59-086 POS 9'
'TALB' (Album/Movie/Show title)                     'Legendary Masters'
'TBPM' (BPM (beats per minute))                     '91.846'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rockabilly'
'TDRC' (Recording time)                             '1959'
'TIT2' (Title/songname/content description)         'Just A Little Too Much'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'Ricky Nelson'
'TRCK' (Track number/Position in set)               '12'
'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'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'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'                        '+1.13 dB'
'TXXX:replaygain_track_peak'                        '0.629074'

========================== row from database ==========================
                                              'id'  1446244
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1959/59-086 - Ricky Nelson - Just A Little Too Much.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  132
                                           'genre'  rock-pop-early-rockabilly
                                        'filesize'  5288066
                                           'mtime'  1622659481
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1959 59 086 rock pop early rockabilly
                                      'tag_artist'  Ricky Nelson
                                     'tag_release'  Legendary Masters
                                       'tag_title'  Just A Little Too Much
                                             'bpm'  91.846
                                    'search_title'  'a':2 'just':1 'little':3 'much':5 'too':4
                                   'search_artist'  'nelson':2 'ricky':1
                                  'search_release'  'legendary':1 'masters':2
                                     'search_rest'  '00oldiepop':5 '1959':6 '59':7 'country':4 'early':10 'exotica':2 'jazz':1 'oldies':3 'pop':9 'rock':8 'rockabilly':11
                                    'search_combo'  '00oldiepop':14 '1959':15 '59':16 'a':2A 'country':13 'early':19 'exotica':11 'jazz':10 'just':1A 'legendary':8C 'little':3A 'masters':9C 'much':5A 'nelson':7B 'oldies':12 'pop':18 'ricky':6B 'rock':17 'rockabilly':20 'too':4A
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  4B
                                           '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-2', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['60s', 'rock', 'oldies', 'rockabilly', 'classic rock']
                                        'tag_date'  1959
                                     'discogstags'  ['electronic', 'garage house']

============================== file details ==============================
                                           'mtime'  1622659481.2641673  (2021-06-02 20:44:41)
                             'size'  5288066