======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '130'
                                          'artist'  "Charles d'Almaine"
                                     'text_people'  ''
                                         'release'  'Edison  7195'
                                           'title'  'Spring Song (Mendelssohn-Bartholdy - Lied Ohne Worte)'
                                           '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-2', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['violin', '1913', 'edison records', '1910s', 'harp']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1902'
                                        'comments'  ''
                                           'genre'  'prerock-instrumental;mi-strings-violin'
                                             'bpm'  '140.4'
                                             'key'  '12B'
                                        '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  7195'
'TBPM' (BPM (beats per minute))                     '140.4'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-instrumental', 'mi-strings-violin']
'TDRC' (Recording time)                             '1902'
'TIT2' (Title/songname/content description)         'Spring Song (Mendelssohn-Bartholdy - Lied Ohne Worte)'
'TKEY' (Initial key)                                '12B'
'TLEN' (Length)                                     '130000'
'TPE1' (Lead performer(s)/Soloist(s))               "Charles d'Almaine"
'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'                                   ['violin', '1913', 'edison records', '1910s', 'harp']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'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'                        '+1.10 dB'
'TXXX:replaygain_track_peak'                        '0.941310'

========================== row from database ==========================
                                              'id'  1519743
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1902/Charles D_ Almaine violin - Spring Song (Mendelssohn) 1902.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  130
                                           'genre'  prerock-instrumental;mi-strings-violin
                                        'filesize'  2723006
                                           'mtime'  1620528004
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1902 D_ violin (Mendelssohn) 1902 prerock instrumental;mi strings violin
                                      'tag_artist'  Charles d'Almaine
                                     'tag_release'  Edison  7195
                                       'tag_title'  Spring Song (Mendelssohn-Bartholdy - Lied Ohne Worte)
                                             'bpm'  140.4
                                    'search_title'  'bartholdy':4 'lied':6 'mendelssohn':3 'mendelssohnbartholdy':5 'ohne':7 'song':2 'spring':1 'worte':8,9
                                   'search_artist'  'almaine':3 'charles':1 'd':2 'dalmaine':4
                                  'search_release'  '7195':2 'edison':1
                                     'search_rest'  '00oldiepop':5 '1902':6 'country':4 'd':7 'exotica':2 'instrumental':12,14 'jazz':1 'mendelssohn':9,10 'mi':13,15 'oldies':3 'prerock':11 'strings':16 'violin':8
                                    'search_combo'  '00oldiepop':20 '1902':21 '7195':15C 'almaine':12B 'bartholdy':4A 'charles':10B 'country':19 'd':11B,22 'dalmaine':13B 'edison':14C 'exotica':17 'instrumental':27,29 'jazz':16 'lied':6A 'mendelssohn':3A,24,25 'mendelssohnbartholdy':5A 'mi':28,30 'ohne':7A 'oldies':18 'prerock':26 'song':2A 'spring':1A 'strings':31 'violin':23 'worte':8A,9A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  12B
                                           '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-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['violin', '1913', 'edison records', '1910s', 'harp']
                                        'tag_date'  1902
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528003.6962588  (2021-05-09 04:40:03)
                             'size'  2723006