======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '169'
                                          'artist'  'Lew Stone'
                                     'text_people'  ''
                                         'release'  'Regal Zonophone MR 1831'
                                           'title'  'Why Stars Come Out At Night (vocal - Joy Worth)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', '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-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['british dance bands', 'jazz', 'swing']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '113.900'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Regal Zonophone MR 1831'
'TBPM' (BPM (beats per minute))                     '113.900'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'Why Stars Come Out At Night (vocal - Joy Worth)'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Lew Stone'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['british dance bands', 'jazz', 'swing']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.97 dB'
'TXXX:replaygain_track_peak'                        '0.565379'

========================== row from database ==========================
                                              'id'  1432929
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1935/Lew Stone - Why Stars Come Out At Night (vocal - Joy Worth) 19-8-1935.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  169
                                           'genre'  prerock-swing
                                        'filesize'  3387193
                                           'mtime'  1620560730
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1935 19 1935 prerock swing
                                      'tag_artist'  Lew Stone
                                     'tag_release'  Regal Zonophone MR 1831
                                       'tag_title'  Why Stars Come Out At Night (vocal - Joy Worth)
                                             'bpm'  113.9
                                    'search_title'  'at':5 'come':3 'joy':9 'night':6 'out':4 'stars':2 'vocal':7,8 'why':1 'worth':10,11
                                   'search_artist'  'lew':1 'stone':2
                                  'search_release'  '1831':4 'mr':3 'regal':1 'zonophone':2
                                     'search_rest'  '00oldiepop':5 '19':7 '1935':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'swing':9
                                    'search_combo'  '00oldiepop':22 '1831':17C '19':24 '1935':23 'at':5A 'come':3A 'country':21 'exotica':19 'jazz':18 'joy':9A 'lew':12B 'mr':16C 'night':6A 'oldies':20 'out':4A 'prerock':25 'regal':14C 'stars':2A 'stone':13B 'swing':26 'vocal':7A,8A 'why':1A 'worth':10A,11A 'zonophone':15C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10A
                                           '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-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['british dance bands', 'jazz', 'swing']
                                        'tag_date'  1935
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620560730.3527496  (2021-05-09 13:45:30)
                             'size'  3387193