======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '396'
                                          'artist'  'Nine Inch Nails'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Nine Inch Nails-Only (BCN Dub)'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['industrial metal', 'rock', 'industrial', 'nin', 'industrial rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'eid-ebm or industrial or darkwave'
                                             'bpm'  '126.017'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '126.017'
'TCON' (Content type, a.k.a. Genre)                 'eid-ebm or industrial or darkwave'
'TIT2' (Title/songname/content description)         'Nine Inch Nails-Only (BCN Dub)'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Nine Inch Nails'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['industrial metal', 'rock', 'industrial', 'nin', 'industrial rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.20 dB'
'TXXX:replaygain_track_peak'                        '0.743014'

========================== row from database ==========================
                                              'id'  1394301
                                            'path'  /data/Music/Bulk/00dwimp/00ebm-industrial-darkwave-goth/Nine Inch Nails/cifs331d.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  396
                                           'genre'  eid-ebm or industrial or darkwave
                                        'filesize'  9522172
                                           'mtime'  1620296041
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00ebm industrial darkwave goth cifs331d eid ebm or industrial or darkwave
                                      'tag_artist'  Nine Inch Nails
                                     'tag_release'  None
                                       'tag_title'  Nine Inch Nails-Only (BCN Dub)
                                             'bpm'  126.017
                                    'search_title'  'bcn':6,7 'dub':8,9 'inch':2 'nails':3 'nailsonly':5 'nine':1 'only':4
                                   'search_artist'  'inch':2 'nails':3 'nine':1
                                  'search_release'  
                                     'search_rest'  '00dwimp':1 '00ebm':2 'cifs331d':6 'darkwave':4 'ebm':8 'eid':7 'goth':5 'industrial':3 'or':9
                                    'search_combo'  '00dwimp':13 '00ebm':14 'bcn':6A,7A 'cifs331d':18 'darkwave':16 'dub':8A,9A 'ebm':20 'eid':19 'goth':17 'inch':2A,11B 'industrial':15 'nails':3A,12B 'nailsonly':5A 'nine':1A,10B 'only':4A 'or':21
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-4', 'q-other-1', 'Q-HAP-1', 'q-bass-4', 'q-grit-4']
                                      'lastfmtags'  ['industrial metal', 'rock', 'industrial', 'nin', 'industrial rock']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620296040.9439669  (2021-05-06 12:14:00)
                             'size'  9522172