======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '195'
                                          'artist'  'Donor'
                                     'text_people'  ''
                                         'release'  'Dark Techno'
                                           'title'  'Us For Them (Sleeparchive Remix) DT'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-4', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-4']")
                                      'lastfmtags'  ("['techno', 'minimal techno', 'progressive thrash metal', 'thrash metal', "
 "'progressive metal']")
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2016'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno'
                                             'bpm'  '125.939'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 00000569 00000550 00003A9D 00003A2B 00046843 0005741F 00008F5E 00008E49 '
 '000094C6 000094C6')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 000008D2 00000000014D6A1E 00000000 012E53EB 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'Dark Techno'
'TBPM' (BPM (beats per minute))                     '125.939'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno'
'TDRC' (Recording time)                             '2016'
'TENC' (Encoded by)                                 'iTunes 12.3.1.23'
'TIT2' (Title/songname/content description)         'Us For Them (Sleeparchive Remix) DT'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Donor'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HAP'                                        '2'
'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'                                   ['techno',
 'minimal techno',
 'progressive thrash metal',
 'thrash metal',
 'progressive metal']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '4'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '4'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.28 dB'
'TXXX:replaygain_track_peak'                        '0.468159'

========================== row from database ==========================
                                              'id'  1351147
                                            'path'  /data/Music/Bulk/00poprockelectronic/Dark - Techno/Donor - Us For Them (Sleeparchive Rmx) ss.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  195
                                           'genre'  electronic-th-techno
                                        'filesize'  8152754
                                           'mtime'  1620568830
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Rmx) ss electronic th techno
                                      'tag_artist'  Donor
                                     'tag_release'  Dark Techno
                                       'tag_title'  Us For Them (Sleeparchive Remix) DT
                                             'bpm'  125.939
                                    'search_title'  'dt':8 'for':2 'remix':6,7 'sleeparchive':4,5 'them':3 'us':1
                                   'search_artist'  'donor':1
                                  'search_release'  'dark':1 'techno':2
                                     'search_rest'  '00poprockelectronic':1 'electronic':5 'rmx':2,3 'ss':4 'techno':7 'th':6
                                    'search_combo'  '00poprockelectronic':12 'dark':10C 'donor':9B 'dt':8A 'electronic':16 'for':2A 'remix':6A,7A 'rmx':13,14 'sleeparchive':4A,5A 'ss':15 'techno':11C,18 'th':17 'them':3A 'us':1A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-4', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-4', 'q-chart-2', 'q-other-1', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['techno', 'minimal techno', 'progressive thrash metal', 'thrash metal', 'progressive metal']
                                        'tag_date'  2016
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620568830.274416  (2021-05-09 16:00:30)
                             'size'  8152754