======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '186'
                                          'artist'  'Alfredo Campoli Salon Orchestra'
                                     'text_people'  ''
                                         'release'  'Decca F 3349'
                                           'title'  'Only My Song (Lehar) \x1311-1932'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1932'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '139.178'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'GEOB:SfMarkers'                                    GEOB(encoding=<Encoding.LATIN1: 0>, mime='', filename='', desc='SfMarkers', data=b'\x0c\x00\x00\x00d\x00\x00\x00\x00\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     'Decca F 3349'
'TBPM' (BPM (beats per minute))                     '139.178'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1932'
'TIT2' (Title/songname/content description)         'Only My Song (Lehar) \x1311-1932'
'TKEY' (Initial key)                                '4A'
'TLEN' (Length)                                     '186000'
'TPE1' (Lead performer(s)/Soloist(s))               'Alfredo Campoli Salon Orchestra'
'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'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.34 dB'
'TXXX:replaygain_track_peak'                        '0.660396'

========================== row from database ==========================
                                              'id'  1428717
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1932/Alfredo Campoli Salon Orchestra - Only My Song (Lehar) –11-1932.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  186
                                           'genre'  prerock-swing
                                        'filesize'  3770266
                                           'mtime'  1620559922
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop –11 prerock swing
                                      'tag_artist'  Alfredo Campoli Salon Orchestra
                                     'tag_release'  Decca F 3349
                                       'tag_title'  Only My Song (Lehar) 11-1932
                                             'bpm'  139.178
                                    'search_title'  '11':6 '111932':8 '1932':7 'lehar':4,5 'my':2 'only':1 'song':3
                                   'search_artist'  'alfredo':1 'campoli':2 'orchestra':4 'salon':3
                                  'search_release'  '3349':3 'decca':1 'f':2
                                     'search_rest'  '00oldiepop':5 '11':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':7 'swing':8
                                    'search_combo'  '00oldiepop':20 '11':6A,21 '111932':8A '1932':7A '3349':15C 'alfredo':9B 'campoli':10B 'country':19 'decca':13C 'exotica':17 'f':14C 'jazz':16 'lehar':4A,5A 'my':2A 'oldies':18 'only':1A 'orchestra':12B 'prerock':22 'salon':11B 'song':3A 'swing':23
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-1', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1932
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559921.7947404  (2021-05-09 13:32:01)
                             'size'  3770266