======================== unified (from filesystem) ========================
                                         'bitrate'  '214.013'
                                        'duration'  '300'
                                          'artist'  'Kraak & Smaak'
                                     'text_people'  ''
                                         'release'  'Plastic People'
                                           'title'  'Thinking Back'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-2', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['dance', 'house', 'lounge', 'dutch', 'electronic', 'funk']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  '13'
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '104.9'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:http://www.cdtag.com:\x02\x00Ö,ù\x00'         PRIV(owner='http://www.cdtag.com', data=b'\x02\x00\xd6,\xf9\x00')
'TALB' (Album/Movie/Show title)                     'Plastic People'
'TBPM' (BPM (beats per minute))                     '104.9'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2008-00-00'
'TENC' (Encoded by)                                 'H3X'
'TIT2' (Title/songname/content description)         'Thinking Back'
'TKEY' (Initial key)                                '4A'
'TLAN' (Language(s))                                'eng'
'TPE1' (Lead performer(s)/Soloist(s))               'Kraak & Smaak'
'TRCK' (Track number/Position in set)               '9/13'
'TSSE' (Software/Hardware and settings used for encoding)  'LAME 3.97'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:Release type'                                 'Advance'
'TXXX:Rip date'                                     '2008-03-23'
'TXXX:Ripping tool'                                 'CDTag 2.27'
'TXXX:Source'                                       'CDDA'
'TXXX:Supplier'                                     'H3X'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['dance', 'house', 'lounge', 'dutch', 'electronic', 'funk']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.40 dB'
'TXXX:replaygain_track_peak'                        '0.377508'

========================== row from database ==========================
                                              'id'  1337831
                                            'path'  /data/Music/Bulk/00poprockelectronic/Kraak & Smaak/Plastic People/09-kraak_and_smaak-thinking_back.mp3
                                         'working'  None
                                         'bitrate'  214
                                    'duration_sec'  300
                                           'genre'  electronic-unsorted
                                        'filesize'  8050155
                                           'mtime'  1621696308
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 09 kraak_and_smaak thinking_back electronic unsorted
                                      'tag_artist'  Kraak & Smaak
                                     'tag_release'  Plastic People
                                       'tag_title'  Thinking Back
                                             'bpm'  104.9
                                    'search_title'  'back':2 'thinking':1
                                   'search_artist'  'kraak':1 'smaak':2
                                  'search_release'  'people':2 'plastic':1
                                     'search_rest'  '00poprockelectronic':1 'and':3 'back':6 'electronic':7 'kraak':2 'smaak':4 'thinking':5 'unsorted':8
                                    'search_combo'  '00poprockelectronic':7 'and':9 'back':2A,12 'electronic':13 'kraak':3B,8 'people':6C 'plastic':5C 'smaak':4B,10 'thinking':1A,11 'unsorted':14
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'house', 'lounge', 'dutch', 'electronic', 'funk']
                                        'tag_date'  2008
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1621696307.8801346  (2021-05-22 17:11:47)
                             'size'  8050155