======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '157'
                                          'artist'  'The Human Expression'
                                     'text_people'  ''
                                         'release'  'Tape No012 - Things On My Mind'
                                           'title'  'Optical Sound'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HAP-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['garage rock', 'psychedelic rock', '60s', 'psychedelic', 'garage']"
                                     'discogstags'  "['garage rock', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;set-pl-garagetapes'
                                             'bpm'  '116.5'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 00000DD7 00000EEC 00003B59 00004021 0000A5D0 0000A5D0 00006DC1 0000710E '
 '00005C58 00005C58')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000810 000000000069BA60 00000000 004CA53A 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_1:eng'                            'B612941F+356916+31+150+9808+24000+34695+42116+54698+67058+79453+90224+100372+113256+124757+136777+149252+160118+169671+179461+192597+203734+214884+226893+237710+247091+259819+271236+283406+295494+311414+322713+334545+346608'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '20'
'TALB' (Album/Movie/Show title)                     'Tape No012 - Things On My Mind'
'TBPM' (BPM (beats per minute))                     '116.5'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-garage', 'set-pl-garagetapes']
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         'Optical Sound'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Human Expression'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '12'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['garage rock', 'rock']
'TXXX:lastfmtags'                                   ['garage rock', 'psychedelic rock', '60s', 'psychedelic', 'garage']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.21 dB'
'TXXX:replaygain_track_peak'                        '0.440612'
'TXXX:tracknum'                                     '12'

========================== row from database ==========================
                                              'id'  505147
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT012/12 - The Human Expression - Optical Sound.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  157
                                           'genre'  rock-gr-garage;set-pl-garagetapes
                                        'filesize'  5031936
                                           'mtime'  1620382794
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT012 rock gr garage;set pl garagetapes
                                      'tag_artist'  The Human Expression
                                     'tag_release'  Tape No012 - Things On My Mind
                                       'tag_title'  Optical Sound
                                             'bpm'  116.5
                                    'search_title'  'optical':1 'sound':2
                                   'search_artist'  'expression':3 'human':2 'the':1
                                  'search_release'  'mind':6 'my':5 'no012':2 'on':4 'tape':1 'things':3
                                     'search_rest'  'blogspot':2 'com':3 'garage':8,10 'garagetapes':1,13 'garagetapesblogspotcom':4 'gr':7 'gt012':5 'pl':12 'rock':6 'set':9,11
                                    'search_combo'  'blogspot':13 'com':14 'expression':5B 'garage':19,21 'garagetapes':12,24 'garagetapesblogspotcom':15 'gr':18 'gt012':16 'human':4B 'mind':11C 'my':10C 'no012':7C 'on':9C 'optical':1A 'pl':23 'rock':17 'set':20,22 'sound':2A 'tape':6C 'the':3B 'things':8C
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['garage rock', 'psychedelic rock', '60s', 'psychedelic', 'garage']
                                        'tag_date'  1965
                                     'discogstags'  ['garage rock', 'rock']

============================== file details ==============================
                                           'mtime'  1620382794.4587476  (2021-05-07 12:19:54)
                             'size'  5031936