======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '204'
                                          'artist'  'Master/Slave Relationship'
                                     'text_people'  ''
                                         'release'  'Tellus #13: Power Electronics'
                                           'title'  'The Heaviest'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', "
 "'q-grit-2', 'q-play-2', 'Q-OLDST-3', 'q-chart-1', 'q-drums-3', 'q-other-3', "
 "'q-piano-1', 'q-vocals-2', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['industrial', 'noise', 'experimental', 'dark ambient', 'spoken word']"
                                     'discogstags'  "['industrial', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '09'
                                      'tracktotal'  ''
                                            'date'  '1986'
                                        'comments'  ''
                                           'genre'  'electronic-experimental-oddness'
                                             'bpm'  '124.4'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Tellus #13: Power Electronics'
'TBPM' (BPM (beats per minute))                     '124.4'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental-oddness'
'TDRC' (Recording time)                             '1986'
'TIT2' (Title/songname/content description)         'The Heaviest'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Master/Slave Relationship'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '09'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '3'
'TXXX:discogstags'                                  ['industrial', 'electronic']
'TXXX:lastfmtags'                                   ['industrial', 'noise', 'experimental', 'dark ambient', 'spoken word']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.25 dB'
'TXXX:replaygain_track_peak'                        '0.476029'

========================== row from database ==========================
                                              'id'  316465
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Tellus Audio Cassette Magazine/1986 - Tellus #13 - Power Electronics/09 - MasterSlave Relationship - The Heaviest.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  204
                                           'genre'  electronic-experimental-oddness
                                        'filesize'  4961480
                                           'mtime'  1628358187
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Audio Cassette Magazine 1986 09 MasterSlave electronic experimental oddness
                                      'tag_artist'  Master/Slave Relationship
                                     'tag_release'  Tellus #13: Power Electronics
                                       'tag_title'  The Heaviest
                                             'bpm'  124.4
                                    'search_title'  'heaviest':2 'the':1
                                   'search_artist'  'master':1 'masterslave':3 'relationship':4 'slave':2
                                  'search_release'  '13':2,3 'electronics':5 'power':4 'tellus':1
                                     'search_rest'  '1986':4 'audio':1 'cassette':2 'electronic':6 'experimental':7 'magazine':3 'master':9 'masterslave':5 'oddness':8 'slave':10
                                    'search_combo'  '13':8C,9C '1986':15 'audio':12 'cassette':13 'electronic':17 'electronics':11C 'experimental':18 'heaviest':2A 'magazine':14 'master':3B,20 'masterslave':5B,16 'oddness':19 'power':10C 'relationship':6B 'slave':4B,21 'tellus':7C 'the':1A
                                    'tag_tracknum'  9
                                      'num_images'  1
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['industrial', 'noise', 'experimental', 'dark ambient', 'spoken word']
                                        'tag_date'  1986
                                     'discogstags'  ['industrial', 'electronic']

============================== file details ==============================
                                           'mtime'  1628358187.032076  (2021-08-07 19:43:07)
                             'size'  4961480