======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '167'
                                          'artist'  'Bobbejaan Schoepen'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Marslied Van De Wandelaars'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['belgium', 'country', 'nederlandstalig', 'belgian', 'easy listening']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1951'
                                        'comments'  ''
                                           'genre'  'prerock-vocal;loc-eur-netherlands'
                                             'bpm'  '122.289'
                                             'key'  '2B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '122.289'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-vocal', 'loc-eur-netherlands']
'TDRC' (Recording time)                             '1951'
'TIT2' (Title/songname/content description)         'Marslied Van De Wandelaars'
'TKEY' (Initial key)                                '2B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bobbejaan Schoepen'
'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'                                   ['belgium', 'country', 'nederlandstalig', 'belgian', 'easy listening']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.12 dB'
'TXXX:replaygain_track_peak'                        '0.468536'

========================== row from database ==========================
                                              'id'  1435819
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1951/Bobbejaan Schoepen - Marslied Van De Wandelaars 1951.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  167
                                           'genre'  prerock-vocal;loc-eur-netherlands
                                        'filesize'  3346226
                                           'mtime'  1621627730
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1951 1951 prerock vocal;loc eur netherlands
                                      'tag_artist'  Bobbejaan Schoepen
                                     'tag_release'  None
                                       'tag_title'  Marslied Van De Wandelaars
                                             'bpm'  122.289
                                    'search_title'  'de':3 'marslied':1 'van':2 'wandelaars':4
                                   'search_artist'  'bobbejaan':1 'schoepen':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1951':6 'country':4 'eur':12 'exotica':2 'jazz':1 'loc':9,11 'netherlands':13 'oldies':3 'prerock':7 'vocal':8,10
                                    'search_combo'  '00oldiepop':11 '1951':12 'bobbejaan':5B 'country':10 'de':3A 'eur':18 'exotica':8 'jazz':7 'loc':15,17 'marslied':1A 'netherlands':19 'oldies':9 'prerock':13 'schoepen':6B 'van':2A 'vocal':14,16 'wandelaars':4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2B
                                           '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-2', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['belgium', 'country', 'nederlandstalig', 'belgian', 'easy listening']
                                        'tag_date'  1951
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627729.5216947  (2021-05-21 22:08:49)
                             'size'  3346226