======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '190'
                                          'artist'  'Caterina Valente'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Die Goldenen Spangen (Wenn Der Tag Kommt)(club Indonesia)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['myhitparade', 'jazz', 'female vocalists', 'deutsche schlager', 'schlager']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1956'
                                        'comments'  ''
                                           'genre'  'prerock-german'
                                             'bpm'  '87.219'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '87.219'
'TCON' (Content type, a.k.a. Genre)                 'prerock-german'
'TDRC' (Recording time)                             '1956'
'TIT2' (Title/songname/content description)         'Die Goldenen Spangen (Wenn Der Tag Kommt)(club Indonesia)'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Caterina Valente'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['myhitparade', 'jazz', 'female vocalists', 'deutsche schlager', 'schlager']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.29 dB'
'TXXX:replaygain_track_peak'                        '0.467838'

========================== row from database ==========================
                                              'id'  1452217
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1956/Caterina Valente - Die Goldenen Spangen (Wenn Der Tag Kommt)(Club Indonesia) 25-8-1956.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  190
                                           'genre'  prerock-german
                                        'filesize'  3809074
                                           'mtime'  1621627894
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1956 Kommt)(Club 25 8 1956 prerock german
                                      'tag_artist'  Caterina Valente
                                     'tag_release'  None
                                       'tag_title'  Die Goldenen Spangen (Wenn Der Tag Kommt)(club Indonesia)
                                             'bpm'  87.219
                                    'search_title'  'club':9 'der':6 'die':1 'goldenen':2 'indonesia':11,12 'kommt':8 'kommtclub':10 'spangen':3 'tag':7 'wenn':4,5
                                   'search_artist'  'caterina':1 'valente':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1956':6 '25':10 '8':11 'club':8 'country':4 'exotica':2 'german':13 'jazz':1 'kommt':7 'kommtclub':9 'oldies':3 'prerock':12
                                    'search_combo'  '00oldiepop':19 '1956':20 '25':24 '8':25 'caterina':13B 'club':9A,22 'country':18 'der':6A 'die':1A 'exotica':16 'german':27 'goldenen':2A 'indonesia':11A,12A 'jazz':15 'kommt':8A,21 'kommtclub':10A,23 'oldies':17 'prerock':26 'spangen':3A 'tag':7A 'valente':14B 'wenn':4A,5A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['myhitparade', 'jazz', 'female vocalists', 'deutsche schlager', 'schlager']
                                        'tag_date'  1956
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627893.8834367  (2021-05-21 22:11:33)
                             'size'  3809074