======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '197'
                                          'artist'  'Pietro Frosini'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  'New York Blues Rag'
                                           '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-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['ragtime', 'akkordeon', 'grammophon', '1890 1920']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1916'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted;mi-accordeon'
                                             'bpm'  '108.4'
                                             'key'  '2A'
                                        '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)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '108.4'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-unsorted', 'mi-accordeon']
'TDRC' (Recording time)                             '1916'
'TIT2' (Title/songname/content description)         'New York Blues Rag'
'TKEY' (Initial key)                                '2A'
'TLEN' (Length)                                     '197000'
'TPE1' (Lead performer(s)/Soloist(s))               'Pietro Frosini'
'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'                                   ['ragtime', 'akkordeon', 'grammophon', '1890 1920']
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '+3.04 dB'
'TXXX:replaygain_track_peak'                        '0.549672'

========================== row from database ==========================
                                              'id'  1467718
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1916/Pietro Frosini accordeon - New York Blues Rag 1916.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  197
                                           'genre'  prerock-unsorted;mi-accordeon
                                        'filesize'  3989360
                                           'mtime'  1620528172
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1916 accordeon 1916 prerock unsorted;mi accordeon
                                      'tag_artist'  Pietro Frosini
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  New York Blues Rag
                                             'bpm'  108.4
                                    'search_title'  'blues':3 'new':1 'rag':4 'york':2
                                   'search_artist'  'frosini':2 'pietro':1
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '00oldiepop':5 '1916':6 'accordeon':7 'country':4 'exotica':2 'jazz':1 'mi':10,12 'oldies':3 'prerock':8 'unsorted':9,11
                                    'search_combo'  '00oldiepop':16 '1916':17 'accordeon':18 'album':8C 'blues':3A 'country':15 'exotica':13 'frosini':6B 'jazz':12 'mi':21,23 'new':1A 'non':7C 'nonalbum':9C 'oldies':14 'pietro':5B 'prerock':19 'rag':4A 'tracks':10C,11C 'unsorted':20,22 'york':2A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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'  ['ragtime', 'akkordeon', 'grammophon', '1890 1920']
                                        'tag_date'  1916
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528172.324315  (2021-05-09 04:42:52)
                             'size'  3989360