======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '140'
                                          'artist'  'Four Aces Featuring Al Alberts'
                                     'text_people'  ''
                                         'release'  'Four Aces featuring Al Alberts'
                                           'title'  'Wedding Bells (Are Breaking Up That Old Gang Of Mine)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-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-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '176'
                                      'tracktotal'  ''
                                            'date'  '1954'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '137.758'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'COMM::XXX'                                         '54-144 POS 22'
'COMM:ID3v1 Comment:XXX'                            '54-144 POS 22'
'TALB' (Album/Movie/Show title)                     'Four Aces featuring Al Alberts'
'TBPM' (BPM (beats per minute))                     '137.758'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TIT2' (Title/songname/content description)         'Wedding Bells (Are Breaking Up That Old Gang Of Mine)'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Four Aces Featuring Al Alberts'
'TPE2' (Band/orchestra/accompaniment)               'Four Aces Featuring Al Alberts'
'TRCK' (Track number/Position in set)               '176'
'TXXX:DATE'                                         '1954'
'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:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'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'                        '+7.97 dB'
'TXXX:replaygain_track_peak'                        '0.244230'

========================== row from database ==========================
                                              'id'  1453959
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1954/54-144 - Four Aces featuring Al Alberts - Wedding Bells (Are Breaking Up That Old Gang Of Mine).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  140
                                           'genre'  prerock-vocal
                                        'filesize'  5644683
                                           'mtime'  1621853325
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1954 54 144 prerock vocal
                                      'tag_artist'  Four Aces Featuring Al Alberts
                                     'tag_release'  Four Aces featuring Al Alberts
                                       'tag_title'  Wedding Bells (Are Breaking Up That Old Gang Of Mine)
                                             'bpm'  137.758
                                    'search_title'  'are':3,4 'bells':2 'breaking':5 'gang':9 'mine':11,12 'of':10 'old':8 'that':7 'up':6 'wedding':1
                                   'search_artist'  'aces':2 'al':4 'alberts':5 'featuring':3 'four':1
                                  'search_release'  'aces':2 'al':4 'alberts':5 'featuring':3 'four':1
                                     'search_rest'  '00oldiepop':5 '144':8 '1954':6 '54':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'vocal':10
                                    'search_combo'  '00oldiepop':27 '144':30 '1954':28 '54':29 'aces':14B,19C 'al':16B,21C 'alberts':17B,22C 'are':3A,4A 'bells':2A 'breaking':5A 'country':26 'exotica':24 'featuring':15B,20C 'four':13B,18C 'gang':9A 'jazz':23 'mine':11A,12A 'of':10A 'old':8A 'oldies':25 'prerock':31 'that':7A 'up':6A 'vocal':32 'wedding':1A
                                    'tag_tracknum'  176
                                      'num_images'  0
                                             'key'  10A
                                           '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-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1954
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621853324.8551617  (2021-05-24 12:48:44)
                             'size'  5644683