======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '148'
                                          'artist'  'Chordettes'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Wedding'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', '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'  "['50s', 'oldies', 'female vocalists', 'doo wop', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1956'
                                        'comments'  ''
                                           'genre'  'prerock-vocal-female'
                                             'bpm'  '129.150'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '129.150'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal-female'
'TDRC' (Recording time)                             '1956'
'TIT2' (Title/songname/content description)         'Wedding'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Chordettes'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['50s', 'oldies', 'female vocalists', 'doo wop', 'pop']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'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'                        '+1.00 dB'
'TXXX:replaygain_track_peak'                        '0.459880'

========================== row from database ==========================
                                              'id'  1450952
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1956/Chordettes - Wedding 14-1-1956.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  148
                                           'genre'  prerock-vocal-female
                                        'filesize'  2981686
                                           'mtime'  1621625778
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1956 14 1 1956 prerock vocal female
                                      'tag_artist'  Chordettes
                                     'tag_release'  None
                                       'tag_title'  Wedding
                                             'bpm'  129.15
                                    'search_title'  'wedding':1
                                   'search_artist'  'chordettes':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1':7 '1956':6 'country':4 'exotica':2 'female':10 'jazz':1 'oldies':3 'prerock':8 'vocal':9
                                    'search_combo'  '00oldiepop':7 '1':9 '1956':8 'chordettes':2B 'country':6 'exotica':4 'female':12 'jazz':3 'oldies':5 'prerock':10 'vocal':11 'wedding':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           '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-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['50s', 'oldies', 'female vocalists', 'doo wop', 'pop']
                                        'tag_date'  1956
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621625777.8186066  (2021-05-21 21:36:17)
                             'size'  2981686