======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '237'
                                          'artist'  "Max Fells' Della Robbia Orchestra"
                                     'text_people'  ''
                                         'release'  'Edison Blue Amberol  4269'
                                           'title'  'Ohio O My O'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', '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'  "['1920s', 'instrumental', '20s', 'twenties', 'all']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1921'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '84.6'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'COMM:MusicMatch_Tempo:eng'                         'None'
'TALB' (Album/Movie/Show title)                     'Edison Blue Amberol  4269'
'TBPM' (BPM (beats per minute))                     '84.6'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1921-01-07'
'TIT2' (Title/songname/content description)         'Ohio O My O'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '237000'
'TPE1' (Lead performer(s)/Soloist(s))               "Max Fells' Della Robbia 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:lastfmtags'                                   ['1920s', 'instrumental', '20s', 'twenties', 'all']
'TXXX:q-bass'                                       '1'
'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'                        '-0.21 dB'
'TXXX:replaygain_track_peak'                        '0.539201'

========================== row from database ==========================
                                              'id'  1501609
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1921/Max Fells_ Della Robbia Orchestra - Ohio O My O 7-1-1921.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  237
                                           'genre'  prerock-swing
                                        'filesize'  4820508
                                           'mtime'  1620559747
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1921 Fells_ 7 1 1921 prerock swing
                                      'tag_artist'  Max Fells' Della Robbia Orchestra
                                     'tag_release'  Edison Blue Amberol  4269
                                       'tag_title'  Ohio O My O
                                             'bpm'  84.6
                                    'search_title'  'my':3 'o':2 'ohio':1
                                   'search_artist'  'della':4 'fells':2,3 'max':1 'orchestra':6 'robbia':5
                                  'search_release'  '4269':4 'amberol':3 'blue':2 'edison':1
                                     'search_rest'  '00oldiepop':5 '1':9 '1921':6 '7':8 'country':4 'exotica':2 'fells':7 'jazz':1 'oldies':3 'prerock':10 'swing':11
                                    'search_combo'  '00oldiepop':18 '1':22 '1921':19 '4269':13C '7':21 'amberol':12C 'blue':11C 'country':17 'della':7B 'edison':10C 'exotica':15 'fells':5B,6B,20 'jazz':14 'max':4B 'my':3A 'o':2A 'ohio':1A 'oldies':16 'orchestra':9B 'prerock':23 'robbia':8B 'swing':24
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6A
                                           '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-1', 'q-grit-1']
                                      'lastfmtags'  ['1920s', 'instrumental', '20s', 'twenties', 'all']
                                        'tag_date'  1921
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559747.394112  (2021-05-09 13:29:07)
                             'size'  4820508