======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '144'
                                          'artist'  'Blenders'
                                     'text_people'  ''
                                         'release'  'A Million Dollars Woth of Doo Wop, Vol. 16 '
                                           'title'  'Soda Shop'
                                           'quals'  ("['Q-OLDST-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'q-syn-1', "
 "'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', 'q-drums-2', "
 "'q-other-2', 'q-piano-1', 'q-vocals-4', 'Q-HHRNBTT-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['funk', 'polish', 'rock', 'alternative', 'funky']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '07'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-th-candy'
                                             'bpm'  '138.607'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:AverageLevel:{\x10\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x10\x00\x00')
'PRIV:PeakValue:¡}\x00\x00'                         PRIV(owner='PeakValue', data=b'\xa1}\x00\x00')
'TALB' (Album/Movie/Show title)                     'A Million Dollars Woth of Doo Wop, Vol. 16 '
'TBPM' (BPM (beats per minute))                     '138.607'
'TCON' (Content type, a.k.a. Genre)                 'set-th-candy'
'TIT2' (Title/songname/content description)         'Soda Shop'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Blenders'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '07'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['funk', 'polish', 'rock', 'alternative', 'funky']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.73 dB'
'TXXX:replaygain_track_peak'                        '0.584454'

========================== row from database ==========================
                                              'id'  735918
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/sweets/The Blenders - Soda Shop.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  144
                                           'genre'  set-th-candy
                                        'filesize'  2392564
                                           'mtime'  1620343127
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country sweets The set candy
                                      'tag_artist'  Blenders
                                     'tag_release'  A Million Dollars Woth of Doo Wop, Vol. 16 
                                       'tag_title'  Soda Shop
                                             'bpm'  138.607
                                    'search_title'  'shop':2 'soda':1
                                   'search_artist'  'blenders':1
                                  'search_release'  'a':1 'dollars':3 'doo':6 'million':2 'of':5 'vol':9,10 'wop':7,8 'woth':4
                                     'search_rest'  'candy':8 'country':4 'exotica':2 'jazz':1 'oldies':3 'set':7 'sweets':5 'the':6
                                    'search_combo'  'a':4C 'blenders':3B 'candy':21 'country':17 'dollars':6C 'doo':9C 'exotica':15 'jazz':14 'million':5C 'of':8C 'oldies':16 'set':20 'shop':2A 'soda':1A 'sweets':18 'the':19 'vol':12C,13C 'wop':10C,11C 'woth':7C
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['funk', 'polish', 'rock', 'alternative', 'funky']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620343126.6693048  (2021-05-07 01:18:46)
                             'size'  2392564