======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '157'
                                          'artist'  'Platters'
                                     'text_people'  ''
                                         'release'  'The Magic Touch: An Anthology Disc 1'
                                           'title'  "You'll Never, Never Know"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-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-2', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', 'soul', '60s', 'rhythm and blues', 'doo wop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '071'
                                      'tracktotal'  ''
                                            'date'  '1956'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rocknroll'
                                             'bpm'  '88.943'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Magic Touch: An Anthology Disc 1'
'TBPM' (BPM (beats per minute))                     '88.943'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rocknroll'
'TDRC' (Recording time)                             '1956'
'TIT2' (Title/songname/content description)         "You'll Never, Never Know"
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Platters'
'TPUB' (Publisher)                                  'Mercury'
'TRCK' (Track number/Position in set)               '071'
'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'                                   ['oldies', 'soul', '60s', 'rhythm and blues', 'doo wop']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.64 dB'
'TXXX:replaygain_track_peak'                        '0.500789'

========================== row from database ==========================
                                              'id'  1496571
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1956/1956-071 - Platters - You_ll Never, Never Know.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  157
                                           'genre'  rock-pop-early-rocknroll
                                        'filesize'  6320000
                                           'mtime'  1622659461
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1956 1956 071 You_ll rock pop early rocknroll
                                      'tag_artist'  Platters
                                     'tag_release'  The Magic Touch: An Anthology Disc 1
                                       'tag_title'  You'll Never, Never Know
                                             'bpm'  88.943
                                    'search_title'  'know':6 'll':2 'never':4,5 'you':1 'youll':3
                                   'search_artist'  'platters':1
                                  'search_release'  '1':8 'an':5 'anthology':6 'disc':7 'magic':2 'the':1 'touch':3,4
                                     'search_rest'  '00oldiepop':5 '1956':6 'country':4 'early':11 'exotica':2 'jazz':1 'll':8 'oldies':3 'pop':10 'rock':9 'rocknroll':12 'you':7
                                    'search_combo'  '00oldiepop':20 '1':15C '1956':21 'an':12C 'anthology':13C 'country':19 'disc':14C 'early':26 'exotica':17 'jazz':16 'know':6A 'll':2A,23 'magic':9C 'never':4A,5A 'oldies':18 'platters':7B 'pop':25 'rock':24 'rocknroll':27 'the':8C 'touch':10C,11C 'you':1A,22 'youll':3A
                                    'tag_tracknum'  71
                                      'num_images'  0
                                             'key'  3A
                                           '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-1', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['oldies', 'soul', '60s', 'rhythm and blues', 'doo wop']
                                        'tag_date'  1956
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622659460.9859548  (2021-06-02 20:44:20)
                             'size'  6320000