======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '178'
                                          'artist'  'Bing Crosby'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1949'
                                           'title'  'Far Away Places'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-2', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['crooners', 'jazz', 'christmas', 'oldies', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '18'
                                      'tracktotal'  ''
                                            'date'  '1949'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '133.316'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Billboard Top Pop Singles of 1949'
'TBPM' (BPM (beats per minute))                     '133.316'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1949'
'TIT2' (Title/songname/content description)         'Far Away Places'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bing Crosby'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '18'
'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'                                   ['crooners', 'jazz', 'christmas', 'oldies', 'swing']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.21 dB'
'TXXX:replaygain_track_peak'                        '0.914065'

========================== row from database ==========================
                                              'id'  1295047
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1949/18 Bing Crosby - Far Away Places.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  178
                                           'genre'  prerock-swing
                                        'filesize'  2861035
                                           'mtime'  1620562753
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 18 prerock swing
                                      'tag_artist'  Bing Crosby
                                     'tag_release'  Billboard Top Pop Singles of 1949
                                       'tag_title'  Far Away Places
                                             'bpm'  133.316
                                    'search_title'  'away':2 'far':1 'places':3
                                   'search_artist'  'bing':1 'crosby':2
                                  'search_release'  '1949':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 '18':3 'prerock':4 'swing':5 'top100':2
                                    'search_combo'  '00poprockelectronic':12 '18':14 '1949':11C 'away':2A 'billboard':6C 'bing':4B 'crosby':5B 'far':1A 'of':10C 'places':3A 'pop':8C 'prerock':15 'singles':9C 'swing':16 'top':7C 'top100':13
                                    'tag_tracknum'  18
                                      'num_images'  0
                                             'key'  4B
                                           '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-2', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['crooners', 'jazz', 'christmas', 'oldies', 'swing']
                                        'tag_date'  1949
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620562752.6779366  (2021-05-09 14:19:12)
                             'size'  2861035