======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '164'
                                          'artist'  'Carroll Gibbons'
                                     'text_people'  ''
                                         'release'  'Columbia FB  3209'
                                           'title'  'Here Comes Heaven Again (Savoy Hotel Orpheans v Eric Whitley) \x134-1946'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', '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-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['piano', 'jazz', 'female vocalists', '1401fh', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1946'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '137.478'
                                             '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)                     'Columbia FB  3209'
'TBPM' (BPM (beats per minute))                     '137.478'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1946'
'TIT2' (Title/songname/content description)         'Here Comes Heaven Again (Savoy Hotel Orpheans v Eric Whitley) \x134-1946'
'TKEY' (Initial key)                                '4A'
'TLEN' (Length)                                     '164000'
'TPE1' (Lead performer(s)/Soloist(s))               'Carroll Gibbons'
'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'                                   ['piano', 'jazz', 'female vocalists', '1401fh', 'swing']
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.39 dB'
'TXXX:replaygain_track_peak'                        '0.551729'

========================== row from database ==========================
                                              'id'  1426883
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1946/Carroll Gibbons - Here Comes Heaven Again (Savoy Hotel Orpheans v Eric Whitley) –4-1946.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  164
                                           'genre'  prerock-swing
                                        'filesize'  3357415
                                           'mtime'  1620562033
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop –4 prerock swing
                                      'tag_artist'  Carroll Gibbons
                                     'tag_release'  Columbia FB  3209
                                       'tag_title'  Here Comes Heaven Again (Savoy Hotel Orpheans v Eric Whitley) 4-1946
                                             'bpm'  137.478
                                    'search_title'  '1946':14 '4':13 '41946':15 'again':4 'comes':2 'eric':10 'heaven':3 'here':1 'hotel':7 'orpheans':8 'savoy':5,6 'v':9 'whitley':11,12
                                   'search_artist'  'carroll':1 'gibbons':2
                                  'search_release'  '3209':3 'columbia':1 'fb':2
                                     'search_rest'  '00oldiepop':5 '4':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':7 'swing':8
                                    'search_combo'  '00oldiepop':25 '1946':14A '3209':20C '4':13A,26 '41946':15A 'again':4A 'carroll':16B 'columbia':18C 'comes':2A 'country':24 'eric':10A 'exotica':22 'fb':19C 'gibbons':17B 'heaven':3A 'here':1A 'hotel':7A 'jazz':21 'oldies':23 'orpheans':8A 'prerock':27 'savoy':5A,6A 'swing':28 'v':9A 'whitley':11A,12A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  4A
                                           '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-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'  ['piano', 'jazz', 'female vocalists', '1401fh', 'swing']
                                        'tag_date'  1946
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620562033.1930244  (2021-05-09 14:07:13)
                             'size'  3357415