======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '200'
                                          'artist'  'Kraftwerk'
                                     'text_people'  ''
                                         'release'  'The Mix'
                                           'title'  'Trans Europe Express'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['german', 'electronica', 'electro', 'electronic', 'synthpop']"
                                     'discogstags'  "['electronic', 'electro', 'synth-pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  '11'
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'electronic-we-electropop or synthpop'
                                             'bpm'  '104.985'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Mix'
'TBPM' (BPM (beats per minute))                     '104.985'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-electropop or synthpop'
'TDRC' (Recording time)                             '1991'
'TIT2' (Title/songname/content description)         'Trans Europe Express'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Kraftwerk'
'TRCK' (Track number/Position in set)               '7/11'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'electro', 'synth-pop']
'TXXX:lastfmtags'                                   ['german', 'electronica', 'electro', 'electronic', 'synthpop']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.71 dB'
'TXXX:replaygain_track_peak'                        '0.800897'

========================== row from database ==========================
                                              'id'  1283023
                                            'path'  /data/Music/Bulk/00poprockelectronic/Kraftwerk/autobahn/07 - trans europe express.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  200
                                           'genre'  electronic-we-electropop or synthpop
                                        'filesize'  8017459
                                           'mtime'  1628353781
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic autobahn 07 trans europe express electronic electropop or synthpop
                                      'tag_artist'  Kraftwerk
                                     'tag_release'  The Mix
                                       'tag_title'  Trans Europe Express
                                             'bpm'  104.985
                                    'search_title'  'europe':2 'express':3 'trans':1
                                   'search_artist'  'kraftwerk':1
                                  'search_release'  'mix':2 'the':1
                                     'search_rest'  '00poprockelectronic':1 'autobahn':2 'electronic':6 'electropop':7 'europe':4 'express':5 'or':8 'synthpop':9 'trans':3
                                    'search_combo'  '00poprockelectronic':7 'autobahn':8 'electronic':12 'electropop':13 'europe':2A,10 'express':3A,11 'kraftwerk':4B 'mix':6C 'or':14 'synthpop':15 'the':5C 'trans':1A,9
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', '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-4', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['german', 'electronica', 'electro', 'electronic', 'synthpop']
                                        'tag_date'  1991
                                     'discogstags'  ['electronic', 'electro', 'synth-pop']

============================== file details ==============================
                                           'mtime'  1628353780.5577188  (2021-08-07 18:29:40)
                             'size'  8017459