======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '180'
                                          'artist'  'Heartbeats'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Everybody's Somebody's Fool"
                                           'quals'  ("['Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', '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-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['melodic hardcore', 'metalcore', 'ukrainian', 'metal', 'doo wop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '407'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '122.882'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '122.882'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1957'
'TIT2' (Title/songname/content description)         "Everybody's Somebody's Fool"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Heartbeats'
'TRCK' (Track number/Position in set)               '407'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['melodic hardcore', 'metalcore', 'ukrainian', 'metal', 'doo wop']
'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'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.37 dB'
'TXXX:replaygain_track_peak'                        '0.673969'

========================== row from database ==========================
                                              'id'  1508489
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1957/57-407 - Heartbeats - Everybody_s Somebody_s Fool.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  180
                                           'genre'  prerock-unsorted
                                        'filesize'  7227475
                                           'mtime'  1620387721
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1957 57 407 Everybody_s Somebody_s prerock unsorted
                                      'tag_artist'  Heartbeats
                                     'tag_release'  None
                                       'tag_title'  Everybody's Somebody's Fool
                                             'bpm'  122.882
                                    'search_title'  'everybody':1 'everybodys':3 'fool':7 's':2,5 'somebody':4 'somebodys':6
                                   'search_artist'  'heartbeats':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1957':6 '407':8 '57':7 'country':4 'everybody':9 'exotica':2 'jazz':1 'oldies':3 'prerock':13 's':10,12 'somebody':11 'unsorted':14
                                    'search_combo'  '00oldiepop':13 '1957':14 '407':16 '57':15 'country':12 'everybody':1A,17 'everybodys':3A 'exotica':10 'fool':7A 'heartbeats':8B 'jazz':9 'oldies':11 'prerock':21 's':2A,5A,18,20 'somebody':4A,19 'somebodys':6A 'unsorted':22
                                    'tag_tracknum'  407
                                      'num_images'  0
                                             'key'  9A
                                           '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-2', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['melodic hardcore', 'metalcore', 'ukrainian', 'metal', 'doo wop']
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620387721.4336345  (2021-05-07 13:42:01)
                             'size'  7227475