======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '135'
                                          'artist'  'Ada Jones & Len Spencer'
                                     'text_people'  ''
                                         'release'  'Edison  9311'
                                           'title'  "Maggie Clancy's New Piano"
                                           '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-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jewish', 'vaudeville', 'cylinder', 'musical', 'early recordings']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1906'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '110.7'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.OTHER (Other) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TALB' (Album/Movie/Show title)                     'Edison  9311'
'TBPM' (BPM (beats per minute))                     '110.7'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1906'
'TIT2' (Title/songname/content description)         "Maggie Clancy's New Piano"
'TKEY' (Initial key)                                '9A'
'TLEN' (Length)                                     '135000'
'TPE1' (Lead performer(s)/Soloist(s))               'Ada Jones & Len Spencer'
'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:lastfmtags'                                   ['jewish', 'vaudeville', 'cylinder', 'musical', 'early recordings']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.98 dB'
'TXXX:replaygain_track_peak'                        '0.941971'

========================== row from database ==========================
                                              'id'  1505480
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1906/Ada Jones & Len Spencer - Maggie Clancy_s New Piano 1906.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  135
                                           'genre'  prerock-vocal
                                        'filesize'  2776566
                                           'mtime'  1620665896
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1906 Clancy_s 1906 prerock vocal
                                      'tag_artist'  Ada Jones & Len Spencer
                                     'tag_release'  Edison  9311
                                       'tag_title'  Maggie Clancy's New Piano
                                             'bpm'  110.7
                                    'search_title'  'clancy':2 'clancys':4 'maggie':1 'new':5 'piano':6 's':3
                                   'search_artist'  'ada':1 'jones':2 'len':3 'spencer':4
                                  'search_release'  '9311':2 'edison':1
                                     'search_rest'  '00oldiepop':5 '1906':6 'clancy':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 's':8 'vocal':10
                                    'search_combo'  '00oldiepop':17 '1906':18 '9311':12C 'ada':7B 'clancy':2A,19 'clancys':4A 'country':16 'edison':11C 'exotica':14 'jazz':13 'jones':8B 'len':9B 'maggie':1A 'new':5A 'oldies':15 'piano':6A 'prerock':21 's':3A,20 'spencer':10B 'vocal':22
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  9A
                                           '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-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['jewish', 'vaudeville', 'cylinder', 'musical', 'early recordings']
                                        'tag_date'  1906
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620665895.9197586  (2021-05-10 18:58:15)
                             'size'  2776566