======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '166'
                                          'artist'  'Bo Diddley'
                                     'text_people'  'Ellas McDaniel'
                                         'release'  'Road Runner - The Chess Masters 1959-1960 [Disc 2]'
                                           'title'  'Cadillac'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-2', 'Q-JZFKS-3', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock and roll', 'blues', 'rhythm and blues', 'soul', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  '26'
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues;set-pl-spelling;rock-pop-early-blues'
                                             'bpm'  '113.453'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 00001099 00000EFE 00006661 0000521F 00015053 00015053 00007D8E 000083AE '
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'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 000007C8 00000000006FCFA8 00000000 003CCB44 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '26+81E881B7458B892EC99A59339EA1081C+11416886'
'TALB' (Album/Movie/Show title)                     'Road Runner - The Chess Masters 1959-1960 [Disc 2]'
'TBPM' (BPM (beats per minute))                     '113.453'
'TCOM' (Composer)                                   'Ellas McDaniel'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-jb-blues', 'set-pl-spelling', 'rock-pop-early-blues']
'TDRC' (Recording time)                             '1959'
'TENC' (Encoded by)                                 'iTunes 8.0.2'
'TIT2' (Title/songname/content description)         'Cadillac'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bo Diddley'
'TPOS' (Part of a set)                              '2/2'
'TRCK' (Track number/Position in set)               '11/26'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rock and roll', 'blues', 'rhythm and blues', 'soul', 'rock']
'TXXX:q-bass'                                       '1'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.20 dB'
'TXXX:replaygain_track_peak'                        '0.435776'

========================== row from database ==========================
                                              'id'  768965
                                            'path'  /data/Music/Bulk/0playlists/0novelty themes/spelling/Bo Diddley - Cadillac.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  166
                                           'genre'  prerock-jb-blues;set-pl-spelling;rock-pop-early-blues
                                        'filesize'  3991473
                                           'mtime'  1620736813
                                   'redo_metaread'  0
                                        'rest_str'   0playlists 0novelty themes spelling prerock jb blues;set pl spelling;rock pop early blues
                                      'tag_artist'  Bo Diddley
                                     'tag_release'  Road Runner - The Chess Masters 1959-1960 [Disc 2]
                                       'tag_title'  Cadillac
                                             'bpm'  113.453
                                    'search_title'  'cadillac':1
                                   'search_artist'  'bo':1 'diddley':2
                                  'search_release'  '1959':6 '19591960':8 '1960':7 '2':11,12 'chess':4 'disc':9,10 'masters':5 'road':1 'runner':2 'the':3
                                     'search_rest'  '0novelty':2 '0playlists':1 'blues':7,9,18 'early':17 'jb':6 'pl':11 'pop':16 'prerock':5 'rock':13,15 'set':8,10 'spelling':4,12,14 'themes':3
                                    'search_combo'  '0novelty':17 '0playlists':16 '1959':9C '19591960':11C '1960':10C '2':14C,15C 'blues':22,24,33 'bo':2B 'cadillac':1A 'chess':7C 'diddley':3B 'disc':12C,13C 'early':32 'jb':21 'masters':8C 'pl':26 'pop':31 'prerock':20 'road':4C 'rock':28,30 'runner':5C 'set':23,25 'spelling':19,27,29 'the':6C 'themes':18
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['rock and roll', 'blues', 'rhythm and blues', 'soul', 'rock']
                                        'tag_date'  1959
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736812.6634872  (2021-05-11 14:40:12)
                             'size'  3991473