======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '656'
                                          'artist'  'Matt Green'
                                     'text_people'  ''
                                         'release'  'Epileptik Productions'
                                           'title'  'Remind'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-OLDST-4', 'q-syn-3', 'q-bass-1', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['hardcore', 'industrial', 'dubstep', 'gabber', 'industrial hardcore']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  'B1'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-th-hardcore'
                                             'bpm'  '104.4'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Epileptik Productions'
'TBPM' (BPM (beats per minute))                     '104.4'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-hardcore'
'TIT2' (Title/songname/content description)         'Remind'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Matt Green'
'TRCK' (Track number/Position in set)               'B1'
'TXXX:Engineer'                                     'PARADOX  '
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '4'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['hardcore', 'industrial', 'dubstep', 'gabber', 'industrial hardcore']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.82 dB'
'TXXX:replaygain_track_peak'                        '0.580157'

========================== row from database ==========================
                                              'id'  760256
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/[epk 010] - matt green - audio vengeance (2001)/b1 - Matt Green - Remind.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  656
                                           'genre'  electronic-th-hardcore
                                        'filesize'  15750353
                                           'mtime'  1620524344
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm [epk 010] matt green audio vengeance (2001) b1 electronic th hardcore
                                      'tag_artist'  Matt Green
                                     'tag_release'  Epileptik Productions
                                       'tag_title'  Remind
                                             'bpm'  104.4
                                    'search_title'  'remind':1
                                   'search_artist'  'green':2 'matt':1
                                  'search_release'  'epileptik':1 'productions':2
                                     'search_rest'  '010':3,4 '2001':9,10 'audio':7 'b1':11 'electronic':12 'epk':1,2 'green':6 'hardcore':14 'matt':5 'th':13 'vengeance':8
                                    'search_combo'  '010':8,9 '2001':14,15 'audio':12 'b1':16 'electronic':17 'epileptik':4C 'epk':6,7 'green':3B,11 'hardcore':19 'matt':2B,10 'productions':5C 'remind':1A 'th':18 'vengeance':13
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-4', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-1', 'Q-HAP-2', 'q-bass-1', 'q-grit-3']
                                      'lastfmtags'  ['hardcore', 'industrial', 'dubstep', 'gabber', 'industrial hardcore']
                                        'tag_date'  
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620524343.6490831  (2021-05-09 03:39:03)
                             'size'  15750353