======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '151'
                                          'artist'  'Tony Bellus'
                                     'text_people'  ''
                                         'release'  'Still The Greatest: 1957-1960  (Volume 1)  (K-Tel Records)'
                                           'title'  "Robbin' The Cradle"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', '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'  "['all', '50s', 'oldies', 'feelings', '60s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '140.238'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '59-172 POS 25'
'COMM:ID3v1 Comment:XXX'                            '59-172 POS 25'
'TALB' (Album/Movie/Show title)                     'Still The Greatest: 1957-1960  (Volume 1)  (K-Tel Records)'
'TBPM' (BPM (beats per minute))                     '140.238'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1959'
'TENC' (Encoded by)                                 'hlmExact Audio Copy   (Secure Mode)'
'TIT2' (Title/songname/content description)         "Robbin' The Cradle"
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Tony Bellus'
'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:lastfmtags'                                   ['all', '50s', 'oldies', 'feelings', '60s']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'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'                        '+0.49 dB'
'TXXX:replaygain_track_peak'                        '0.499905'

========================== row from database ==========================
                                              'id'  1505430
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1959/59-172 - Tony Bellus -  Robbin_ The Cradle.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  151
                                           'genre'  prerock-unsorted
                                        'filesize'  6076288
                                           'mtime'  1621698400
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1959 59 172 Robbin_ prerock unsorted
                                      'tag_artist'  Tony Bellus
                                     'tag_release'  Still The Greatest: 1957-1960  (Volume 1)  (K-Tel Records)
                                       'tag_title'  Robbin' The Cradle
                                             'bpm'  140.238
                                    'search_title'  'cradle':4 'robbin':1,2 'the':3
                                   'search_artist'  'bellus':2 'tony':1
                                  'search_release'  '1':10,11 '1957':5 '19571960':7 '1960':6 'greatest':3,4 'k':12 'ktel':14 'records':15,16 'still':1 'tel':13 'the':2 'volume':8,9
                                     'search_rest'  '00oldiepop':5 '172':8 '1959':6 '59':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':10 'robbin':9 'unsorted':11
                                    'search_combo'  '00oldiepop':27 '1':16C,17C '172':30 '1957':11C '19571960':13C '1959':28 '1960':12C '59':29 'bellus':6B 'country':26 'cradle':4A 'exotica':24 'greatest':9C,10C 'jazz':23 'k':18C 'ktel':20C 'oldies':25 'prerock':32 'records':21C,22C 'robbin':1A,2A,31 'still':7C 'tel':19C 'the':3A,8C 'tony':5B 'unsorted':33 'volume':14C,15C
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  9B
                                           '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-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['all', '50s', 'oldies', 'feelings', '60s']
                                        'tag_date'  1959
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698399.95642  (2021-05-22 17:46:39)
                             'size'  6076288