======================== unified (from filesystem) ========================
                                         'bitrate'  '80.0'
                                        'duration'  '153'
                                          'artist'  'Bing Crosby & the Andrews Sisters'
                                     'text_people'  ''
                                         'release'  'Decca 23281'
                                           'title'  'Jingle Bells'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', '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'  "['30s', 'jazz', '40s', 'christmas', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1943'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '121.774'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         ('Debuted 1943 and peaked at # on Various Charts. Label/Number: Decca 9-16041. '
 'Pop Charts 1920-1954\r\n')
'COMM:ID3v1 Comment:XXX'                            'Debuted 1943 and peaked at #'
'TALB' (Album/Movie/Show title)                     'Decca 23281'
'TBPM' (BPM (beats per minute))                     '121.774'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1943'
'TIT2' (Title/songname/content description)         'Jingle Bells'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bing Crosby & the Andrews Sisters'
'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'                                   ['30s', 'jazz', '40s', 'christmas', 'swing']
'TXXX:q-bass'                                       '1'
'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'                        '+2.02 dB'
'TXXX:replaygain_track_peak'                        '0.521356'
'UFID:'                                             UFID(owner='', data=b'XL\x00 CH1943_004')

========================== row from database ==========================
                                              'id'  1451377
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1943/ch1943_004 - bing crosby & the andrews sisters - jingle bells 80 m (2.34).mp3
                                         'working'  None
                                         'bitrate'  80
                                    'duration_sec'  153
                                           'genre'  prerock-swing
                                        'filesize'  1537920
                                           'mtime'  1620561889
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1943 ch1943_004 bing crosby andrews sisters jingle bells 80 m (2.34) prerock swing
                                      'tag_artist'  Bing Crosby & the Andrews Sisters
                                     'tag_release'  Decca 23281
                                       'tag_title'  Jingle Bells
                                             'bpm'  121.774
                                    'search_title'  'bells':2 'jingle':1
                                   'search_artist'  'andrews':4 'bing':1 'crosby':2 'sisters':5 'the':3
                                  'search_release'  '23281':2 'decca':1
                                     'search_rest'  '004':8 '00oldiepop':5 '1943':6 '2':17 '234':19 '34':18 '80':15 'andrews':11 'bells':14 'bing':9 'ch1943':7 'country':4 'crosby':10 'exotica':2 'jazz':1 'jingle':13 'm':16 'oldies':3 'prerock':20 'sisters':12 'swing':21
                                    'search_combo'  '004':17 '00oldiepop':14 '1943':15 '2':26 '23281':9C '234':28 '34':27 '80':24 'andrews':6B,20 'bells':2A,23 'bing':3B,18 'ch1943':16 'country':13 'crosby':4B,19 'decca':8C 'exotica':11 'jazz':10 'jingle':1A,22 'm':25 'oldies':12 'prerock':29 'sisters':7B,21 'swing':30 'the':5B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           '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-1', 'q-grit-1']
                                      'lastfmtags'  ['30s', 'jazz', '40s', 'christmas', 'swing']
                                        'tag_date'  1943
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561889.0112228  (2021-05-09 14:04:49)
                             'size'  1537920