======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '154'
                                          'artist'  'Lew Stone and the Monseigneur Band, Al Bowlly'
                                     'text_people'  ''
                                         'release'  '20s and 30s popular'
                                           'title'  "You Couldn't Be Cuter"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '146.000'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:AverageLevel:â\x19\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xe2\x19\x00\x00')
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     '20s and 30s popular'
'TBPM' (BPM (beats per minute))                     '146.000'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         "You Couldn't Be Cuter"
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Lew Stone and the Monseigneur Band, Al Bowlly'
'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'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.98 dB'
'TXXX:replaygain_track_peak'                        '0.421012'

========================== row from database ==========================
                                              'id'  1515081
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Lew Stone and the Monseigneur Band, Al Bowlly - You Couldn_t Be Cuter.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  154
                                           'genre'  prerock-swing
                                        'filesize'  2489815
                                           'mtime'  1620559675
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s 1930s Couldn_t prerock swing
                                      'tag_artist'  Lew Stone and the Monseigneur Band, Al Bowlly
                                     'tag_release'  20s and 30s popular
                                       'tag_title'  You Couldn't Be Cuter
                                             'bpm'  146.0
                                    'search_title'  'be':5 'couldn':2 'couldnt':4 'cuter':6 't':3 'you':1
                                   'search_artist'  'al':8 'and':3 'band':6,7 'bowlly':9 'lew':1 'monseigneur':5 'stone':2 'the':4
                                  'search_release'  '20s':1 '30s':3 'and':2 'popular':4
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':7 'couldn':8 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':10 'swing':11 't':9
                                    'search_combo'  '00oldiepop':24 '1920s':25 '1930s':26 '20s':16C '30s':18C 'al':14B 'and':9B,17C 'band':12B,13B 'be':5A 'bowlly':15B 'couldn':2A,27 'couldnt':4A 'country':23 'cuter':6A 'exotica':21 'jazz':20 'lew':7B 'monseigneur':11B 'oldies':22 'popular':19C 'prerock':29 'stone':8B 'swing':30 't':3A,28 'the':10B 'you':1A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  9B
                                           '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-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559675.1429892  (2021-05-09 13:27:55)
                             'size'  2489815