======================== unified (from filesystem) ========================
                                         'bitrate'  '205.434'
                                        'duration'  '380'
                                          'artist'  'Local Boy'
                                     'text_people'  ''
                                         'release'  'I Love Disco Diamonds Collection Vol. 24'
                                           'title'  'Thriller Medley With Owner Of A Lonely Heart'
                                           'quals'  ("['Q-HAP-4', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-1', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['italo disco', 'i love disco diamonds', 'discompany']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'electronic-we-disco or italo'
                                             'bpm'  '121.6'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM::XXX'                                         ' '
'COMM:iTunSMPB:eng'                                 (' 00000000 00000000 00000000 0000000000000000 00000000 00000000 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'I Love Disco Diamonds Collection Vol. 24'
'TBPM' (BPM (beats per minute))                     '121.6'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-disco or italo'
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Thriller Medley With Owner Of A Lonely Heart'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Local Boy'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '9'
'TXXX:Q-HAP'                                        '4'
'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'                                   ['italo disco', 'i love disco diamonds', 'discompany']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.78 dB'
'TXXX:replaygain_track_peak'                        '0.443509'

========================== row from database ==========================
                                              'id'  1347489
                                            'path'  /data/Music/Bulk/00poprockelectronic-waves-disco/00disco-italo/Rose - The Best Italo Disco/(09) [Local Boy] Thriller Medley With Owner Of A Lonely Heart.mp3
                                         'working'  None
                                         'bitrate'  205
                                    'duration_sec'  380
                                           'genre'  electronic-we-disco or italo
                                        'filesize'  9775814
                                           'mtime'  1620610656
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic waves disco 00disco italo Rose The Best Italo (09) [Local Boy] electronic we disco or italo
                                      'tag_artist'  Local Boy
                                     'tag_release'  I Love Disco Diamonds Collection Vol. 24
                                       'tag_title'  Thriller Medley With Owner Of A Lonely Heart
                                             'bpm'  121.6
                                    'search_title'  'a':6 'heart':8 'lonely':7 'medley':2 'of':5 'owner':4 'thriller':1 'with':3
                                   'search_artist'  'boy':2 'local':1
                                  'search_release'  '24':8 'collection':5 'diamonds':4 'disco':3 'i':1 'love':2 'vol':6,7
                                     'search_rest'  '00disco':4 '00poprockelectronic':1 '09':9,10 'best':8 'boy':13,14 'disco':3 'electronic':15 'italo':5 'local':11,12 'or':17 'rose':6 'the':7 'waves':2 'we':16
                                    'search_combo'  '00disco':22 '00poprockelectronic':19 '09':27,28 '24':18C 'a':6A 'best':26 'boy':10B,31,32 'collection':15C 'diamonds':14C 'disco':13C,21 'electronic':33 'heart':8A 'i':11C 'italo':23 'local':9B,29,30 'lonely':7A 'love':12C 'medley':2A 'of':5A 'or':35 'owner':4A 'rose':24 'the':25 'thriller':1A 'vol':16C,17C 'waves':20 'we':34 'with':3A
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-1', 'q-other-3', 'Q-HAP-4', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['italo disco', 'i love disco diamonds', 'discompany']
                                        'tag_date'  1985
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620610656.2259083  (2021-05-10 03:37:36)
                             'size'  9775814