======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '131'
                                          'artist'  'Les Paul & Mary Ford'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Mister Sandman'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['guitar', 'jazz', '50s', 'pop', 'oldies']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'prerock-guitar'
                                             'bpm'  '108.8'
                                             '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'
'TBPM' (BPM (beats per minute))                     '108.8'
'TCON' (Content type, a.k.a. Genre)                 'prerock-guitar'
'TDRC' (Recording time)                             '1955'
'TIT2' (Title/songname/content description)         'Mister Sandman'
'TKEY' (Initial key)                                '9A'
'TLEN' (Length)                                     '131000'
'TPE1' (Lead performer(s)/Soloist(s))               'Les Paul & Mary Ford'
'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'                                   ['guitar', 'jazz', '50s', 'pop', 'oldies']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.43 dB'
'TXXX:replaygain_track_peak'                        '0.536356'

========================== row from database ==========================
                                              'id'  1460506
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1955/Les Paul & Mary Ford - Mister Sandman 1955.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  131
                                           'genre'  prerock-guitar
                                        'filesize'  2724711
                                           'mtime'  1621705379
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1955 1955 prerock guitar
                                      'tag_artist'  Les Paul & Mary Ford
                                     'tag_release'  None
                                       'tag_title'  Mister Sandman
                                             'bpm'  108.8
                                    'search_title'  'mister':1 'sandman':2
                                   'search_artist'  'ford':4 'les':1 'mary':3 'paul':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1955':6 'country':4 'exotica':2 'guitar':8 'jazz':1 'oldies':3 'prerock':7
                                    'search_combo'  '00oldiepop':11 '1955':12 'country':10 'exotica':8 'ford':6B 'guitar':14 'jazz':7 'les':3B 'mary':5B 'mister':1A 'oldies':9 'paul':4B 'prerock':13 'sandman':2A
                                    '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-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['guitar', 'jazz', '50s', 'pop', 'oldies']
                                        'tag_date'  1955
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621705378.6308088  (2021-05-22 19:42:58)
                             'size'  2724711