======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '471'
                                          'artist'  'Slagsmålsklubben'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  ''
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['swedish', 'bitpop', 'blipblop', 'electronic', 'synthpop']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'electronic-we-electropop or synthpop'
                                             'bpm'  '105.368'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '105.368'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-electropop or synthpop'
'TDRC' (Recording time)                             '2001'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Slagsmålsklubben'
'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:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['swedish', 'bitpop', 'blipblop', 'electronic', 'synthpop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.60 dB'
'TXXX:replaygain_track_peak'                        '0.416005'

========================== row from database ==========================
                                              'id'  1304217
                                            'path'  /data/Music/Bulk/00poprockelectronic/Slagsmalsklubben/(2001) Blandade/07 SMK mix.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  471
                                           'genre'  electronic-we-electropop or synthpop
                                        'filesize'  11337516
                                           'mtime'  1628353839
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Slagsmalsklubben (2001) Blandade 07 SMK mix electronic we electropop or synthpop
                                      'tag_artist'  Slagsmålsklubben
                                     'tag_release'  None
                                       'tag_title'  None
                                             'bpm'  105.368
                                    'search_title'  None
                                   'search_artist'  'slagsmalsklubben':1,2
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '2001':3,4 'blandade':5 'electronic':8 'electropop':10 'mix':7 'or':11 'slagsmalsklubben':2 'smk':6 'synthpop':12 'we':9
                                    'search_combo'  '00poprockelectronic':3 '2001':5,6 'blandade':7 'electronic':10 'electropop':12 'mix':9 'or':13 'slagsmalsklubben':1B,2B,4 'smk':8 'synthpop':14 'we':11
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-piano-1', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['swedish', 'bitpop', 'blipblop', 'electronic', 'synthpop']
                                        'tag_date'  2001
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1628353838.7943058  (2021-08-07 18:30:38)
                             'size'  11337516