======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '107'
                                          'artist'  'The Mountain Goats'
                                     'text_people'  ''
                                         'release'  'Sweden'
                                           'title'  'Tahitian Ambrosia Maker'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'acoustic', 'lo fi', 'folk', 'pxs: loved']"
                                     'discogstags'  "['rock', 'folk rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  '19'
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-indie-rock'
                                             'bpm'  '129.1'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 00000352 00000352 00001BC1 00001C83 00006468 00006468 00005E3D 00005DF4 '
 '000001A1 000001BC')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000810 00000000004822E0 00000000 0020AB44 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '19+3F513CBF2E3C089FBCFDE28A6C222EA8+515699'
'TALB' (Album/Movie/Show title)                     'Sweden'
'TBPM' (BPM (beats per minute))                     '129.1'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-indie-rock'
'TDRC' (Recording time)                             '2006'
'TENC' (Encoded by)                                 'iTunes v7.0.2.16'
'TIT2' (Title/songname/content description)         'Tahitian Ambrosia Maker'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Mountain Goats'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '10/19'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'folk rock']
'TXXX:lastfmtags'                                   ['indie', 'acoustic', 'lo fi', 'folk', 'pxs: loved']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.18 dB'
'TXXX:replaygain_track_peak'                        '0.622465'

========================== row from database ==========================
                                              'id'  1299511
                                            'path'  /data/Music/Bulk/00poprockelectronic/The Mountain Goats/Sweden/10 tahitian ambrosia maker.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  107
                                           'genre'  ifs-songwriter-indie-rock
                                        'filesize'  2147398
                                           'mtime'  1622659515
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 10 tahitian ambrosia maker ifs songwriter indie rock
                                      'tag_artist'  The Mountain Goats
                                     'tag_release'  Sweden
                                       'tag_title'  Tahitian Ambrosia Maker
                                             'bpm'  129.1
                                    'search_title'  'ambrosia':2 'maker':3 'tahitian':1
                                   'search_artist'  'goats':3 'mountain':2 'the':1
                                  'search_release'  'sweden':1
                                     'search_rest'  '00poprockelectronic':1 'ambrosia':3 'ifs':5 'indie':7 'maker':4 'rock':8 'songwriter':6 'tahitian':2
                                    'search_combo'  '00poprockelectronic':8 'ambrosia':2A,10 'goats':6B 'ifs':12 'indie':14 'maker':3A,11 'mountain':5B 'rock':15 'songwriter':13 'sweden':7C 'tahitian':1A,9 'the':4B
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'acoustic', 'lo fi', 'folk', 'pxs: loved']
                                        'tag_date'  2006
                                     'discogstags'  ['rock', 'folk rock']

============================== file details ==============================
                                           'mtime'  1622659515.473959  (2021-06-02 20:45:15)
                             'size'  2147398