======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '172'
                                          'artist'  'Hotel Commodore Ensemble'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Softly As In A Morning Sunshine (Tango) -9-1929'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'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-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                     'discogstags'  "['pop', 'light music']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1929'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '100.0'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TBPM' (BPM (beats per minute))                     '100.0'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1929'
'TIT2' (Title/songname/content description)         'Softly As In A Morning Sunshine (Tango) -9-1929'
'TKEY' (Initial key)                                '2A'
'TLEN' (Length)                                     '172000'
'TPE1' (Lead performer(s)/Soloist(s))               'Hotel Commodore Ensemble'
'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:discogstags'                                  ['pop', 'light music']
'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'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.14 dB'
'TXXX:replaygain_track_peak'                        '0.546587'

========================== row from database ==========================
                                              'id'  1473184
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1929/Hotel Commodore Ensemble - Softly As In A Morning Sunshine (tango) -9-1929.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  172
                                           'genre'  prerock-unsorted
                                        'filesize'  3495532
                                           'mtime'  1621697931
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop (tango) prerock unsorted
                                      'tag_artist'  Hotel Commodore Ensemble
                                     'tag_release'  None
                                       'tag_title'  Softly As In A Morning Sunshine (Tango) -9-1929
                                             'bpm'  100.0
                                    'search_title'  '1929':10 '9':9 '91929':11 'a':4 'as':2 'in':3 'morning':5 'softly':1 'sunshine':6 'tango':7,8
                                   'search_artist'  'commodore':2 'ensemble':3 'hotel':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'tango':6,7 'unsorted':9
                                    'search_combo'  '00oldiepop':19 '1929':10A '9':9A '91929':11A 'a':4A 'as':2A 'commodore':13B 'country':18 'ensemble':14B 'exotica':16 'hotel':12B 'in':3A 'jazz':15 'morning':5A 'oldies':17 'prerock':22 'softly':1A 'sunshine':6A 'tango':7A,8A,20,21 'unsorted':23
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  2A
                                           '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-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1929
                                     'discogstags'  ['pop', 'light music']

============================== file details ==============================
                                           'mtime'  1621697931.3810477  (2021-05-22 17:38:51)
                             'size'  3495532