======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '147'
                                          'artist'  'Joop de Knegt'
                                     'text_people'  ''
                                         'release'  'Decca M 34494'
                                           'title'  'Thousand Violins'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['male vocalists', 'the netherlands', 'home collection', '50s', 'dutch']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1953'
                                        'comments'  ''
                                           'genre'  'prerock-instrumental;mi-strings-violin'
                                             'bpm'  '129.233'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Decca M 34494'
'TBPM' (BPM (beats per minute))                     '129.233'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-instrumental', 'mi-strings-violin']
'TDRC' (Recording time)                             '1953'
'TIT2' (Title/songname/content description)         'Thousand Violins'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Joop de Knegt'
'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'                                   ['male vocalists', 'the netherlands', 'home collection', '50s', 'dutch']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'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'                        '+2.57 dB'
'TXXX:replaygain_track_peak'                        '0.523709'

========================== row from database ==========================
                                              'id'  1432685
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1953/Joop de Knegt - Thousand Violins 1953.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  147
                                           'genre'  prerock-instrumental;mi-strings-violin
                                        'filesize'  2954911
                                           'mtime'  1620528082
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1953 1953 prerock instrumental;mi strings violin
                                      'tag_artist'  Joop de Knegt
                                     'tag_release'  Decca M 34494
                                       'tag_title'  Thousand Violins
                                             'bpm'  129.233
                                    'search_title'  'thousand':1 'violins':2
                                   'search_artist'  'de':2 'joop':1 'knegt':3
                                  'search_release'  '34494':3 'decca':1 'm':2
                                     'search_rest'  '00oldiepop':5 '1953':6 'country':4 'exotica':2 'instrumental':8,10 'jazz':1 'mi':9,11 'oldies':3 'prerock':7 'strings':12 'violin':13
                                    'search_combo'  '00oldiepop':13 '1953':14 '34494':8C 'country':12 'de':4B 'decca':6C 'exotica':10 'instrumental':16,18 'jazz':9 'joop':3B 'knegt':5B 'm':7C 'mi':17,19 'oldies':11 'prerock':15 'strings':20 'thousand':1A 'violin':21 'violins':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', '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-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['male vocalists', 'the netherlands', 'home collection', '50s', 'dutch']
                                        'tag_date'  1953
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528081.734433  (2021-05-09 04:41:21)
                             'size'  2954911