======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '516'
                                          'artist'  'BT'
                                     'text_people'  ''
                                         'release'  'Ima (2 Disc Version)'
                                           'title'  'Nocturnal Transmission'
                                           'quals'  ("['Q-HAP-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-UNU-1', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['electronica', 'trance', 'techno', 'electronic', 'dance']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '9'
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '129.979'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 000001D6 000001C2 00003288'
'COMM:iTunNORM:eng'                                 (' 000001D6 000001C2 00003288 00002F87 000567FA 000567FA 00008244 000089B8 '
 '0003000F 00075558')
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000930 00000000015BAFC0 00000000 00000000 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'Ima (2 Disc Version)'
'TBPM' (BPM (beats per minute))                     '129.979'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TDRC' (Recording time)                             '1996'
'TENC' (Encoded by)                                 'iTunes v6.0.5'
'TIT2' (Title/songname/content description)         'Nocturnal Transmission'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'BT'
'TPOS' (Part of a set)                              '1/2'
'TRCK' (Track number/Position in set)               '1/9'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['electronica', 'trance', 'techno', 'electronic', 'dance']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.57 dB'
'TXXX:replaygain_track_peak'                        '0.759910'

========================== row from database ==========================
                                              'id'  1329635
                                            'path'  /data/Music/Bulk/00poprockelectronic/BT/Ima/1-01 Nocturnal Transmission.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  516
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  12446250
                                           'mtime'  1621696101
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 1 01 electronic generic or radio dance
                                      'tag_artist'  BT
                                     'tag_release'  Ima (2 Disc Version)
                                       'tag_title'  Nocturnal Transmission
                                             'bpm'  129.979
                                    'search_title'  'nocturnal':1 'transmission':2
                                   'search_artist'  'bt':1
                                  'search_release'  '2':2,3 'disc':4 'ima':1 'version':5,6
                                     'search_rest'  '00poprockelectronic':1 '1':2 'dance':7 'electronic':3 'generic':4 'or':5 'radio':6
                                    'search_combo'  '00poprockelectronic':10 '1':11 '2':5C,6C 'bt':3B 'dance':16 'disc':7C 'electronic':12 'generic':13 'ima':4C 'nocturnal':1A 'or':14 'radio':15 'transmission':2A 'version':8C,9C
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'trance', 'techno', 'electronic', 'dance']
                                        'tag_date'  1996
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696101.040465  (2021-05-22 17:08:21)
                             'size'  12446250