======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '178'
                                          'artist'  'Carroll Gibbons'
                                     'text_people'  ''
                                         'release'  'Columbia CB 739'
                                           'title'  'Keep Young And Beautiful (vocal - Harry Bentley)'
                                           '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-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['piano', 'jazz', 'female vocalists', '1401fh', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1934'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '89.691'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Columbia CB 739'
'TBPM' (BPM (beats per minute))                     '89.691'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1934'
'TIT2' (Title/songname/content description)         'Keep Young And Beautiful (vocal - Harry Bentley)'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Carroll Gibbons'
'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:lastfmtags'                                   ['piano', 'jazz', 'female vocalists', '1401fh', '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'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.50 dB'
'TXXX:replaygain_track_peak'                        '0.556153'

========================== row from database ==========================
                                              'id'  678793
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1934/Carroll Gibbons - Keep Young And Beautiful (vocal - Harry Bentley) 29-3-1934.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  178
                                           'genre'  prerock-swing
                                        'filesize'  3573426
                                           'mtime'  1620560425
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1934 29 1934 prerock swing
                                      'tag_artist'  Carroll Gibbons
                                     'tag_release'  Columbia CB 739
                                       'tag_title'  Keep Young And Beautiful (vocal - Harry Bentley)
                                             'bpm'  89.691
                                    'search_title'  'and':3 'beautiful':4 'bentley':8,9 'harry':7 'keep':1 'vocal':5,6 'young':2
                                   'search_artist'  'carroll':1 'gibbons':2
                                  'search_release'  '739':3 'cb':2 'columbia':1
                                     'search_rest'  '00oldiepop':5 '1934':6 '29':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'swing':9
                                    'search_combo'  '00oldiepop':19 '1934':20 '29':21 '739':14C 'and':3A 'beautiful':4A 'bentley':8A,9A 'carroll':10B 'cb':13C 'columbia':12C 'country':18 'exotica':16 'gibbons':11B 'harry':7A 'jazz':15 'keep':1A 'oldies':17 'prerock':22 'swing':23 'vocal':5A,6A 'young':2A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['piano', 'jazz', 'female vocalists', '1401fh', 'swing']
                                        'tag_date'  1934
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620560424.7390997  (2021-05-09 13:40:24)
                             'size'  3573426