======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '183'
                                          'artist'  'Burt Ambrose'
                                     'text_people'  ''
                                         'release'  'vocal by Elsie Carlisle'
                                           'title'  " You've got me crying again"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-2', '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-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '102.385'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'vocal by Elsie Carlisle'
'TBPM' (BPM (beats per minute))                     '102.385'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         " You've got me crying again"
'TKEY' (Initial key)                                '4A'
'TLEN' (Length)                                     '183278'
'TPE1' (Lead performer(s)/Soloist(s))               'Burt Ambrose'
'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:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.16 dB'
'TXXX:replaygain_track_peak'                        '0.627812'

========================== row from database ==========================
                                              'id'  1496915
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Ambrose Mayfair Hotel Orchestra (Elsie Carlisle) - You_ve got me crying again.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  183
                                           'genre'  prerock-swing
                                        'filesize'  2938891
                                           'mtime'  1620559411
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s and 1930s popular Mayfair Hotel Orchestra (Elsie Carlisle) You_ve prerock swing
                                      'tag_artist'  Burt Ambrose
                                     'tag_release'  vocal by Elsie Carlisle
                                       'tag_title'   You've got me crying again
                                             'bpm'  102.385
                                    'search_title'  'again':7 'crying':6 'got':4 'me':5 've':2 'you':1 'youve':3
                                   'search_artist'  'ambrose':2 'burt':1
                                  'search_release'  'by':2 'carlisle':4 'elsie':3 'vocal':1
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':8 'and':7 'carlisle':15,16 'country':4 'elsie':13,14 'exotica':2 'hotel':11 'jazz':1 'mayfair':10 'oldies':3 'orchestra':12 'popular':9 'prerock':19 'swing':20 've':18 'you':17
                                    'search_combo'  '00oldiepop':18 '1920s':19 '1930s':21 'again':7A 'ambrose':9B 'and':20 'burt':8B 'by':11C 'carlisle':13C,28,29 'country':17 'crying':6A 'elsie':12C,26,27 'exotica':15 'got':4A 'hotel':24 'jazz':14 'mayfair':23 'me':5A 'oldies':16 'orchestra':25 'popular':22 'prerock':32 'swing':33 've':2A,31 'vocal':10C 'you':1A,30 'youve':3A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  4A
                                           '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-2', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559411.151488  (2021-05-09 13:23:31)
                             'size'  2938891