======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '366'
                                          'artist'  'Darude'
                                     'text_people'  ''
                                         'release'  'Energy FM 104.2'
                                           'title'  'Bitter Sweet'
                                           'quals'  ("['Q-HAP-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-UNU-1', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'trance', 'techno', 'electronic', 'electronica']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '137.9'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:#\x1d\x00\x00'                   PRIV(owner='AverageLevel', data=b'#\x1d\x00\x00')
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'Energy FM 104.2'
'TBPM' (BPM (beats per minute))                     '137.9'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TENC' (Encoded by)                                 'ShpurloS'
'TIT2' (Title/songname/content description)         'Bitter Sweet'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Darude'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['dance', 'trance', 'techno', 'electronic', 'electronica']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.54 dB'
'TXXX:replaygain_track_peak'                        '0.541315'
'WXXX:'                                             WXXX(encoding=<Encoding.LATIN1: 0>, desc='', url='http://www.nowals.ru')

========================== row from database ==========================
                                              'id'  1344498
                                            'path'  /data/Music/Bulk/00poprockelectronic/Energy FM 104.2 [OLD]/DARUDE - Bitter Sweet.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  366
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  8793984
                                           'mtime'  1621696210
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic [OLD] DARUDE electronic generic or radio dance
                                      'tag_artist'  Darude
                                     'tag_release'  Energy FM 104.2
                                       'tag_title'  Bitter Sweet
                                             'bpm'  137.9
                                    'search_title'  'bitter':1 'sweet':2
                                   'search_artist'  'darude':1
                                  'search_release'  '104':3 '1042':5 '2':4 'energy':1 'fm':2
                                     'search_rest'  '00poprockelectronic':1 'dance':9 'darude':4 'electronic':5 'generic':6 'old':2,3 'or':7 'radio':8
                                    'search_combo'  '00poprockelectronic':9 '104':6C '1042':8C '2':7C 'bitter':1A 'dance':17 'darude':3B,12 'electronic':13 'energy':4C 'fm':5C 'generic':14 'old':10,11 'or':15 'radio':16 'sweet':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'trance', 'techno', 'electronic', 'electronica']
                                        'tag_date'  
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1621696210.1188555  (2021-05-22 17:10:10)
                             'size'  8793984