======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '439'
                                          'artist'  'Convextion'
                                     'text_people'  ''
                                         'release'  'Anima Amoris'
                                           'title'  'Aa Untitled (Convextion Ep)'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'Q-SYN-4', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-3', "
 "'Q-CHART-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'Q-MIXBEAT-4']")
                                      'lastfmtags'  "['minimal techno', 'electronic', 'techno', 'dub techno', 'minimal']"
                                     'discogstags'  "['techno', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '638'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-th-techno'
                                             'bpm'  '129.7'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         ('Anima Amoris [Techno] 160 MP3 / Convextion - AA Untitled (Convextion EP) * '
 'anima.sknt.ru / Recorded using streamWriter by TauAs')
'TALB' (Album/Movie/Show title)                     'Anima Amoris'
'TBPM' (BPM (beats per minute))                     '129.7'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno'
'TIT2' (Title/songname/content description)         'Aa Untitled (Convextion Ep)'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Convextion'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '638'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '4'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '4'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['techno', 'electronic']
'TXXX:lastfmtags'                                   ['minimal techno', 'electronic', 'techno', 'dub techno', 'minimal']
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-5.81 dB'
'TXXX:replaygain_track_peak'                        '1.141312'

========================== row from database ==========================
                                              'id'  1478198
                                            'path'  /data/Music/Bulk/00poprockelectronic/Anima Amoris [Techno] 160 MP3/Convextion - Aa Untitled (Convextion Ep)   Anima.Sknt.Ru.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  439
                                           'genre'  electronic-th-techno
                                        'filesize'  8803450
                                           'mtime'  1620567306
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic [Techno] 160 MP3 Anima.Sknt.Ru electronic th techno
                                      'tag_artist'  Convextion
                                     'tag_release'  Anima Amoris
                                       'tag_title'  Aa Untitled (Convextion Ep)
                                             'bpm'  129.7
                                    'search_title'  'aa':1 'convextion':3,4 'ep':5,6 'untitled':2
                                   'search_artist'  'convextion':1
                                  'search_release'  'amoris':2 'anima':1
                                     'search_rest'  '00poprockelectronic':1 '160':4 'anima':6 'animaskntru':9 'electronic':10 'mp3':5 'ru':8 'sknt':7 'techno':2,3 'th':11
                                    'search_combo'  '00poprockelectronic':10 '160':13 'aa':1A 'amoris':9C 'anima':8C,15 'animaskntru':18 'convextion':3A,4A,7B 'electronic':19 'ep':5A,6A 'mp3':14 'ru':17 'sknt':16 'techno':11,12 'th':20 'untitled':2A
                                    'tag_tracknum'  638
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-4', 'Q-OLDST-3', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-4', 'Q-SYN-4', 'q-other-2', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-3']
                                      'lastfmtags'  ['minimal techno', 'electronic', 'techno', 'dub techno', 'minimal']
                                        'tag_date'  
                                     'discogstags'  ['techno', 'electronic']

============================== file details ==============================
                                           'mtime'  1620567306.4097104  (2021-05-09 15:35:06)
                             'size'  8803450