======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '266'
                                          'artist'  'Welle:Erdball'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  ''
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['german', 'ebm', 'c64', 'bitpop', 'synthpop', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'electronic-we-electropop or synthpop;eid-ebm or industrial or darkwave'
                                             'bpm'  '100.755'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM:MusicMatch_Path:XXX'                          ('C:\\Temp\\Welle Erdball\\Der Sinn des Lebens\\Welle Erdball_Der Sinn Des '
 'Lebens.mp3')
'COMM:MusicMatch_Serial:XXX'                        '18975B8'
'TBPM' (BPM (beats per minute))                     '100.755'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-we-electropop or synthpop', 'eid-ebm or industrial or darkwave']
'TDRC' (Recording time)                             '1998'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '265000'
'TPE1' (Lead performer(s)/Soloist(s))               'Welle:Erdball'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:album'                                        'Der Sinn des Lebens'
'TXXX:lastfmtags'                                   ['german', 'ebm', 'c64', 'bitpop', 'synthpop', 'electronic']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.28 dB'
'TXXX:replaygain_track_peak'                        '0.533673'
'TXXX:title'                                        ['Der Sinn des Lebens', 'Der Sinn Des Lebens']

========================== row from database ==========================
                                              'id'  1362102
                                            'path'  /data/Music/Bulk/00poprockelectronic/00electro-electropop-synthpop/Welle:Erdball - Welle Erdball/1998 - Der Sinn Des Lebens/Welle Erdball - Der Sinn des Lebens - 02 - Der Sinn des Lebens.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  266
                                           'genre'  electronic-we-electropop or synthpop;eid-ebm or industrial or darkwave
                                        'filesize'  5330049
                                           'mtime'  1620296912
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00electro electropop synthpop 1998 Der Sinn Des Lebens Der Sinn des Lebens 02 Der Sinn des Lebens electronic we electropop or synthpop;eid ebm or industrial or darkwave
                                      'tag_artist'  Welle:Erdball
                                     'tag_release'  None
                                       'tag_title'  None
                                             'bpm'  100.755
                                    'search_title'  None
                                   'search_artist'  'erdball':2 'welle':1 'welleerdball':3
                                  'search_release'  
                                     'search_rest'  '00electro':2 '00poprockelectronic':1 '1998':5 'darkwave':19 'der':6 'des':8 'ebm':17 'eid':14,16 'electronic':10 'electropop':3 'industrial':18 'lebens':9 'or':12 'sinn':7 'synthpop':4,13,15 'we':11
                                    'search_combo'  '00electro':5 '00poprockelectronic':4 '1998':8 'darkwave':22 'der':9 'des':11 'ebm':20 'eid':17,19 'electronic':13 'electropop':6 'erdball':2B 'industrial':21 'lebens':12 'or':15 'sinn':10 'synthpop':7,16,18 'we':14 'welle':1B 'welleerdball':3B
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-piano-1', 'q-syn-3', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['german', 'ebm', 'c64', 'bitpop', 'synthpop', 'electronic']
                                        'tag_date'  1998
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620296912.1412396  (2021-05-06 12:28:32)
                             'size'  5330049