======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '161'
                                          'artist'  'Flanagan & Allen'
                                     'text_people'  ''
                                         'release'  'Columbia FB  2143'
                                           'title'  'Nice People (+ Ronnie Munro Orchestra) \x131-1939'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['dead', 'comedy', '40s', 'british', 'oldies']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1939'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '84.000'
                                             'key'  '6A'
                                        '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)                     'Columbia FB  2143'
'TBPM' (BPM (beats per minute))                     '84.000'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1939'
'TIT2' (Title/songname/content description)         'Nice People (+ Ronnie Munro Orchestra) \x131-1939'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '161000'
'TPE1' (Lead performer(s)/Soloist(s))               'Flanagan & Allen'
'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:lastfmtags'                                   ['dead', 'comedy', '40s', 'british', 'oldies']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'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'                        '+1.21 dB'
'TXXX:replaygain_track_peak'                        '0.466236'

========================== row from database ==========================
                                              'id'  1436553
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1939/Flanagan & Allen - Nice People (+ Ronnie Munro Orchestra) –1-1939.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  161
                                           'genre'  prerock-band
                                        'filesize'  3280332
                                           'mtime'  1620560731
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop –1 prerock band
                                      'tag_artist'  Flanagan & Allen
                                     'tag_release'  Columbia FB  2143
                                       'tag_title'  Nice People (+ Ronnie Munro Orchestra) 1-1939
                                             'bpm'  84.0
                                    'search_title'  '1':7 '11939':9 '1939':8 'munro':4 'nice':1 'orchestra':5,6 'people':2 'ronnie':3
                                   'search_artist'  'allen':2 'flanagan':1
                                  'search_release'  '2143':3 'columbia':1 'fb':2
                                     'search_rest'  '00oldiepop':5 '1':6 'band':8 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':7
                                    'search_combo'  '00oldiepop':19 '1':7A,20 '11939':9A '1939':8A '2143':14C 'allen':11B 'band':22 'columbia':12C 'country':18 'exotica':16 'fb':13C 'flanagan':10B 'jazz':15 'munro':4A 'nice':1A 'oldies':17 'orchestra':5A,6A 'people':2A 'prerock':21 'ronnie':3A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6A
                                           '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-1', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['dead', 'comedy', '40s', 'british', 'oldies']
                                        'tag_date'  1939
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620560730.969199  (2021-05-09 13:45:30)
                             'size'  3280332