======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '147'
                                          'artist'  'Ray Noble Band-Al Bowlly'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  "Al Bowlly & Ray Noble Orchestra - Let's Swing It (1934)"
                                           '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-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1934'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '134.466'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '134.466'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1934'
'TIT2' (Title/songname/content description)         "Al Bowlly & Ray Noble Orchestra - Let's Swing It (1934)"
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ray Noble Band-Al Bowlly'
'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:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '+3.25 dB'
'TXXX:replaygain_track_peak'                        '0.483261'

========================== row from database ==========================
                                              'id'  1510304
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Al Bowlly, Ray Noble - Let_s Swing It (1934).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  147
                                           'genre'  prerock-vocal
                                        'filesize'  2366815
                                           'mtime'  1620666341
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s 1930s popular Bowlly, Let_s prerock vocal
                                      'tag_artist'  Ray Noble Band-Al Bowlly
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  Al Bowlly & Ray Noble Orchestra - Let's Swing It (1934)
                                             'bpm'  134.466
                                    'search_title'  '1934':11,12 'al':1 'bowlly':2 'it':10 'let':6 'lets':8 'noble':4 'orchestra':5 'ray':3 's':7 'swing':9
                                   'search_artist'  'al':4 'band':3 'bandal':5 'bowlly':6 'noble':2 'ray':1
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':7 'bowlly':9,10 'country':4 'exotica':2 'jazz':1 'let':11 'oldies':3 'popular':8 'prerock':13 's':12 'vocal':14
                                    'search_combo'  '00oldiepop':28 '1920s':29 '1930s':30 '1934':11A,12A 'al':1A,16B 'album':20C 'band':15B 'bandal':17B 'bowlly':2A,18B,32,33 'country':27 'exotica':25 'it':10A 'jazz':24 'let':6A,34 'lets':8A 'noble':4A,14B 'non':19C 'nonalbum':21C 'oldies':26 'orchestra':5A 'popular':31 'prerock':36 'ray':3A,13B 's':7A,35 'swing':9A 'tracks':22C,23C 'vocal':37
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1934
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620666340.510055  (2021-05-10 19:05:40)
                             'size'  2366815