======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '687'
                                          'artist'  'Pink Freud'
                                     'text_people'  ''
                                         'release'  'Punk Freud'
                                           'title'  'Canon'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['yass', 'polish', 'jazz', 'nu jazz', 'polish jazz']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-newer-nu;set-pl-sced'
                                             'bpm'  '144.1'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Punk Freud'
'TBPM' (BPM (beats per minute))                     '144.1'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-jb-jazz-newer-nu', 'set-pl-sced']
'TDRC' (Recording time)                             '2007'
'TIT2' (Title/songname/content description)         'Canon'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Pink Freud'
'TPE2' (Band/orchestra/accompaniment)               'Pink Freud'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['yass', 'polish', 'jazz', 'nu jazz', 'polish jazz']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.58 dB'
'TXXX:replaygain_track_peak'                        '0.390008'

========================== row from database ==========================
                                              'id'  1379534
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Pink Freud/[2007] Punk Freud/10 Canon.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  687
                                           'genre'  prerock-jb-jazz-newer-nu;set-pl-sced
                                        'filesize'  22072283
                                           'mtime'  1620533734
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country [2007] 10 prerock jb jazz newer nu;set pl sced
                                      'tag_artist'  Pink Freud
                                     'tag_release'  Punk Freud
                                       'tag_title'  Canon
                                             'bpm'  144.1
                                    'search_title'  'canon':1
                                   'search_artist'  'freud':2 'pink':1
                                  'search_release'  'freud':2 'punk':1
                                     'search_rest'  '2007':5,6 'country':4 'exotica':2 'jazz':1 'jb':8 'newer':9 'nu':10,12 'oldies':3 'pl':14 'prerock':7 'sced':15 'set':11,13
                                    'search_combo'  '2007':10,11 'canon':1A 'country':9 'exotica':7 'freud':3B,5C 'jazz':6 'jb':13 'newer':14 'nu':15,17 'oldies':8 'pink':2B 'pl':19 'prerock':12 'punk':4C 'sced':20 'set':16,18
                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['yass', 'polish', 'jazz', 'nu jazz', 'polish jazz']
                                        'tag_date'  2007
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620533733.6459627  (2021-05-09 06:15:33)
                             'size'  22072283