======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '424'
                                          'artist'  'Helmut Zacharias'
                                     'text_people'  ''
                                         'release'  'Polydor  49390'
                                           'title'  'Verzaubertes Wien Medley (part 1 & 2)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'violin', 'easy listening', 'myhitparade']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1954'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '139.754'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Polydor  49390'
'TBPM' (BPM (beats per minute))                     '139.754'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1954'
'TIT2' (Title/songname/content description)         'Verzaubertes Wien Medley (part 1 & 2)'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Helmut Zacharias'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['instrumental', 'violin', 'easy listening', 'myhitparade']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.31 dB'
'TXXX:replaygain_track_peak'                        '0.559815'

========================== row from database ==========================
                                              'id'  1430293
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1954/Helmut Zacharias - Verzaubertes Wien Medley (part 1 & 2) 1954.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  424
                                           'genre'  prerock-unsorted
                                        'filesize'  8501042
                                           'mtime'  1621698197
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1954 1954 prerock unsorted
                                      'tag_artist'  Helmut Zacharias
                                     'tag_release'  Polydor  49390
                                       'tag_title'  Verzaubertes Wien Medley (part 1 & 2)
                                             'bpm'  139.754
                                    'search_title'  '1':6 '2':7,8 'medley':3 'part':4,5 'verzaubertes':1 'wien':2
                                   'search_artist'  'helmut':1 'zacharias':2
                                  'search_release'  '49390':2 'polydor':1
                                     'search_rest'  '00oldiepop':5 '1954':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':7 'unsorted':8
                                    'search_combo'  '00oldiepop':17 '1':6A '1954':18 '2':7A,8A '49390':12C 'country':16 'exotica':14 'helmut':9B 'jazz':13 'medley':3A 'oldies':15 'part':4A,5A 'polydor':11C 'prerock':19 'unsorted':20 'verzaubertes':1A 'wien':2A 'zacharias':10B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['instrumental', 'violin', 'easy listening', 'myhitparade']
                                        'tag_date'  1954
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698197.0284946  (2021-05-22 17:43:17)
                             'size'  8501042