======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '244'
                                          'artist'  'New York Military Band'
                                     'text_people'  ''
                                         'release'  'Edison Blue Amberol  1638'
                                           'title'  "Belle Of New York & 2nd Reg't Conn NG Marches"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', '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-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1913'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '125.9'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TALB' (Album/Movie/Show title)                     'Edison Blue Amberol  1638'
'TBPM' (BPM (beats per minute))                     '125.9'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1913'
'TIT2' (Title/songname/content description)         "Belle Of New York & 2nd Reg't Conn NG Marches"
'TKEY' (Initial key)                                '9A'
'TLEN' (Length)                                     '244000'
'TPE1' (Lead performer(s)/Soloist(s))               'New York Military Band'
'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'                                       '1'
'TXXX:q-busy'                                       '3'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.83 dB'
'TXXX:replaygain_track_peak'                        '0.529216'

========================== row from database ==========================
                                              'id'  1518581
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1913/New York Military Band - Belle Of New York & 2nd Reg_t Conn NG marches 1913.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  244
                                           'genre'  prerock-band
                                        'filesize'  4933570
                                           'mtime'  1620559417
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1913 Reg_t marches 1913 prerock band
                                      'tag_artist'  New York Military Band
                                     'tag_release'  Edison Blue Amberol  1638
                                       'tag_title'  Belle Of New York & 2nd Reg't Conn NG Marches
                                             'bpm'  125.9
                                    'search_title'  '2nd':5 'belle':1 'conn':9 'marches':11 'new':3 'ng':10 'of':2 'reg':6 'regt':8 't':7 'york':4
                                   'search_artist'  'band':4 'military':3 'new':1 'york':2
                                  'search_release'  '1638':4 'amberol':3 'blue':2 'edison':1
                                     'search_rest'  '00oldiepop':5 '1913':6 'band':11 'country':4 'exotica':2 'jazz':1 'marches':9 'oldies':3 'prerock':10 'reg':7 't':8
                                    'search_combo'  '00oldiepop':24 '1638':19C '1913':25 '2nd':5A 'amberol':18C 'band':15B,30 'belle':1A 'blue':17C 'conn':9A 'country':23 'edison':16C 'exotica':21 'jazz':20 'marches':11A,28 'military':14B 'new':3A,12B 'ng':10A 'of':2A 'oldies':22 'prerock':29 'reg':6A,26 'regt':8A 't':7A,27 'york':4A,13B
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1913
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559417.3164704  (2021-05-09 13:23:37)
                             'size'  4933570