======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '129'
                                          'artist'  'The Chips'
                                     'text_people'  ''
                                         'release'  'The Doo Wop Box, Vol 2 [Disc 2]'
                                           'title'  'Rubber Biscuit'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', 'Q-UNU-1', 'Q-OLDST-2', "
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 "'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['60s', 'doo wop', 'soul', 'oldies']"
                                     'discogstags'  "['doo wop', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  '26'
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'set-th-novelty'
                                             'bpm'  '129.730'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

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'COMM:iTunNORM:eng'                                 (' 0000064B 0000066B 0000313B 00003235 000146BC 000146BC 00006C6F 00006C70 '
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'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 000007B0 000000000056D9C0 00000000 002F35B7 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '26+AEA05353A0E9B1DF4AC8B06132C8493B+198902'
'TALB' (Album/Movie/Show title)                     'The Doo Wop Box, Vol 2 [Disc 2]'
'TBPM' (BPM (beats per minute))                     '129.730'
'TCON' (Content type, a.k.a. Genre)                 'set-th-novelty'
'TDRC' (Recording time)                             '1996'
'TENC' (Encoded by)                                 'iTunes 8.0.2'
'TIT2' (Title/songname/content description)         'Rubber Biscuit'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Chips'
'TPOS' (Part of a set)                              '2/4'
'TRCK' (Track number/Position in set)               '14/26'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['doo wop', 'rock']
'TXXX:lastfmtags'                                   ['60s', 'doo wop', 'soul', 'oldies']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'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'                        '+0.55 dB'
'TXXX:replaygain_track_peak'                        '0.601541'

========================== row from database ==========================
                                              'id'  762606
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Zimelis [Chow, Baby!]/The Chips - Rubber Biscuit.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  129
                                           'genre'  set-th-novelty
                                        'filesize'  3101194
                                           'mtime'  1620343095
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Zimelis [Chow, Baby!] set th novelty
                                      'tag_artist'  The Chips
                                     'tag_release'  The Doo Wop Box, Vol 2 [Disc 2]
                                       'tag_title'  Rubber Biscuit
                                             'bpm'  129.73
                                    'search_title'  'biscuit':2 'rubber':1
                                   'search_artist'  'chips':2 'the':1
                                  'search_release'  '2':7,10 'box':4,5 'disc':8,9 'doo':2 'the':1 'vol':6 'wop':3
                                     'search_rest'  'baby':8,9 'chow':6,7 'country':4 'exotica':2 'jazz':1 'novelty':12 'oldies':3 'set':10 'th':11 'zimelis':5
                                    'search_combo'  '2':11C,14C 'baby':22,23 'biscuit':2A 'box':8C,9C 'chips':4B 'chow':20,21 'country':18 'disc':12C,13C 'doo':6C 'exotica':16 'jazz':15 'novelty':26 'oldies':17 'rubber':1A 'set':24 'th':25 'the':3B,5C 'vol':10C 'wop':7C 'zimelis':19
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['60s', 'doo wop', 'soul', 'oldies']
                                        'tag_date'  1996
                                     'discogstags'  ['doo wop', 'rock']

============================== file details ==============================
                                           'mtime'  1620343095.2135177  (2021-05-07 01:18:15)
                             'size'  3101194