======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '176'
                                          'artist'  'Jack Johnson'
                                     'text_people'  ''
                                         'release'  'On And On'
                                           'title'  'Cookie Jar'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-4', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['acoustic', 'alternative', 'chill', 'rock', 'singer songwriter']"
                                     'discogstags'  "['rock', 'acoustic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  '16'
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '100.956'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 00000EC0 00000181 00013405'
'COMM:iTunNORM:eng'                                 (' 00000EC0 00000181 00013405 000069C5 0000B41A 00015729 00009034 00008F77 '
 '0000C6AC 0000C6AC')
'COMM:iTunes_CDDB_1:eng'                            'D40A5210+198352+16+150+10795+22317+35138+53084+62835+67766+85051+98164+108135+120940+128131+141389+153270+172086+185580'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '12'
'TALB' (Album/Movie/Show title)                     'On And On'
'TBPM' (BPM (beats per minute))                     '100.956'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '2003'
'TENC' (Encoded by)                                 'iTunes v4.9.0.17'
'TIT2' (Title/songname/content description)         'Cookie Jar'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Jack Johnson'
'TRCK' (Track number/Position in set)               '12/16'
'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', 'acoustic']
'TXXX:lastfmtags'                                   ['acoustic', 'alternative', 'chill', 'rock', 'singer songwriter']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.33 dB'
'TXXX:replaygain_track_peak'                        '0.586019'

========================== row from database ==========================
                                              'id'  1307163
                                            'path'  /data/Music/Bulk/00poprockelectronic/Jack Johnson/Jack Johnson_/On And On/12 Cookie Jar.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  176
                                           'genre'  ifs-songwriter
                                        'filesize'  3545088
                                           'mtime'  1636915916
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Johnson_ 12 ifs songwriter
                                      'tag_artist'  Jack Johnson
                                     'tag_release'  On And On
                                       'tag_title'  Cookie Jar
                                             'bpm'  100.956
                                    'search_title'  'cookie':1 'jar':2
                                   'search_artist'  'jack':1 'johnson':2
                                  'search_release'  'and':2 'on':1
                                     'search_rest'  '00poprockelectronic':1 'ifs':3 'johnson':2 'songwriter':4
                                    'search_combo'  '00poprockelectronic':7 'and':6C 'cookie':1A 'ifs':9 'jack':3B 'jar':2A 'johnson':4B,8 'on':5C 'songwriter':10
                                    'tag_tracknum'  12
                                      'num_images'  1
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-2', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['acoustic', 'alternative', 'chill', 'rock', 'singer songwriter']
                                        'tag_date'  2003
                                     'discogstags'  ['rock', 'acoustic']

============================== file details ==============================
                                           'mtime'  1636915916.3783395  (2021-11-14 19:51:56)
                             'size'  3545088