======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '192'
                                          'artist'  'Abe Lyman v/Rose Blane/Chorus'
                                     'text_people'  ''
                                         'release'  'From 78rpm: Bluebird 11542'
                                           'title'  'Amen'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1942'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '130.819'
                                             'key'  '3B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:AverageLevel:o\x0c\x00\x00'                   PRIV(owner='AverageLevel', data=b'o\x0c\x00\x00')
'PRIV:PeakValue:þ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xfe\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'From 78rpm: Bluebird 11542'
'TBPM' (BPM (beats per minute))                     '130.819'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1942'
'TIT2' (Title/songname/content description)         'Amen'
'TKEY' (Initial key)                                '3B'
'TPE1' (Lead performer(s)/Soloist(s))               'Abe Lyman v/Rose Blane/Chorus'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'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'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                        '+1.69 dB'
'TXXX:replaygain_track_peak'                        '0.711381'

========================== row from database ==========================
                                              'id'  1501858
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Abe Lyman_s California Ambassador Hotel Orchestra - Amen 1942 (Bluebird 78 RPM).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  192
                                           'genre'  prerock-band
                                        'filesize'  3103945
                                           'mtime'  1620559723
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s and 1930s popular Lyman_s California Ambassador Hotel Orchestra 1942 (Bluebird RPM) prerock band
                                      'tag_artist'  Abe Lyman v/Rose Blane/Chorus
                                     'tag_release'  From 78rpm: Bluebird 11542
                                       'tag_title'  Amen
                                             'bpm'  130.819
                                    'search_title'  'amen':1
                                   'search_artist'  'abe':1 'blane':6 'blanechorus':8 'chorus':7 'lyman':2 'rose':4 'v':3 'vrose':5
                                  'search_release'  '11542':5 '78rpm':2,3 'bluebird':4 'from':1
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':8 '1942':16 'ambassador':13 'and':7 'band':22 'bluebird':17,18 'california':12 'country':4 'exotica':2 'hotel':14 'jazz':1 'lyman':10 'oldies':3 'orchestra':15 'popular':9 'prerock':21 'rpm':19,20 's':11
                                    'search_combo'  '00oldiepop':19 '11542':14C '1920s':20 '1930s':22 '1942':30 '78rpm':11C,12C 'abe':2B 'ambassador':27 'amen':1A 'and':21 'band':36 'blane':7B 'blanechorus':9B 'bluebird':13C,31,32 'california':26 'chorus':8B 'country':18 'exotica':16 'from':10C 'hotel':28 'jazz':15 'lyman':3B,24 'oldies':17 'orchestra':29 'popular':23 'prerock':35 'rose':5B 'rpm':33,34 's':25 'v':4B 'vrose':6B
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  3B
                                           '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-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1942
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559723.1208298  (2021-05-09 13:28:43)
                             'size'  3103945