======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '221'
                                          'artist'  'Nena'
                                     'text_people'  ''
                                         'release'  'Nena'
                                           'title'  'Nur geträumt'
                                           'quals'  ("['Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['german', '80s', 'female vocalists', 'pop', 'new wave']"
                                     'discogstags'  "['electronic', 'rock', 'new wave', 'synth-pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '1983'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted'
                                             'bpm'  '117.945'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Party'
'TALB' (Album/Movie/Show title)                     'Nena'
'TBPM' (BPM (beats per minute))                     '117.945'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-unsorted'
'TDRC' (Recording time)                             '1983'
'TIT2' (Title/songname/content description)         'Nur geträumt'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Nena'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'rock', 'new wave', 'synth-pop']
'TXXX:lastfmtags'                                   ['german', '80s', 'female vocalists', 'pop', 'new wave']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.90 dB'
'TXXX:replaygain_track_peak'                        '0.612721'

========================== row from database ==========================
                                              'id'  1324269
                                            'path'  /data/Music/Bulk/00poprockelectronic/album top 1000/0228 Nena - Nena/Nena-04-Nur getraumt.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  221
                                           'genre'  electronic-generic or radio-unsorted
                                        'filesize'  5329396
                                           'mtime'  1620573553
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic album top 1000 0228 04 getraumt electronic generic or radio unsorted
                                      'tag_artist'  Nena
                                     'tag_release'  Nena
                                       'tag_title'  Nur geträumt
                                             'bpm'  117.945
                                    'search_title'  'getraumt':2,3 'nur':1
                                   'search_artist'  'nena':1
                                  'search_release'  'nena':1
                                     'search_rest'  '00poprockelectronic':1 '0228':5 '1000':4 'album':2 'electronic':7 'generic':8 'getraumt':6 'or':9 'radio':10 'top':3 'unsorted':11
                                    'search_combo'  '00poprockelectronic':6 '0228':10 '1000':9 'album':7 'electronic':12 'generic':13 'getraumt':2A,3A,11 'nena':4B,5C 'nur':1A 'or':14 'radio':15 'top':8 'unsorted':16
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['german', '80s', 'female vocalists', 'pop', 'new wave']
                                        'tag_date'  1983
                                     'discogstags'  ['electronic', 'rock', 'new wave', 'synth-pop']

============================== file details ==============================
                                           'mtime'  1620573552.5044236  (2021-05-09 17:19:12)
                             'size'  5329396