======================== unified (from filesystem) ========================
                                         'bitrate'  '199.235'
                                        'duration'  '342'
                                          'artist'  'One System'
                                     'text_people'  ''
                                         'release'  'I Love Disco Diamonds Collection Vol. 40'
                                           'title'  'Life Is Very Short'
                                           'quals'  ("['Q-HAP-4', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-2', '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'  "['gianfranco bortolotti', 'italo disco', 'electronic', 'pop', 'synthpop']"
                                     'discogstags'  "['italo-disco', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'electronic-we-disco or italo'
                                             'bpm'  '114.7'
                                             'key'  '9B'
                                        '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. 40'
'TBPM' (BPM (beats per minute))                     '114.7'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-disco or italo'
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Life Is Very Short'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'One System'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '8'
'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'                                  ['italo-disco', 'electronic']
'TXXX:lastfmtags'                                   ['gianfranco bortolotti', 'italo disco', 'electronic', 'pop', 'synthpop']
'TXXX:q-bass'                                       '2'
'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'                        '-0.28 dB'
'TXXX:replaygain_track_peak'                        '0.455045'

========================== row from database ==========================
                                              'id'  1298342
                                            'path'  /data/Music/Bulk/00poprockelectronic-waves-disco/00disco-italo/Rose - The Best Italo Disco/(08) [One System] Life Is Very Short.mp3
                                         'working'  None
                                         'bitrate'  199
                                    'duration_sec'  342
                                           'genre'  electronic-we-disco or italo
                                        'filesize'  8538855
                                           'mtime'  1620610637
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic waves disco 00disco italo Rose The Best Italo (08) [One System] electronic we disco italo
                                      'tag_artist'  One System
                                     'tag_release'  I Love Disco Diamonds Collection Vol. 40
                                       'tag_title'  Life Is Very Short
                                             'bpm'  114.7
                                    'search_title'  'is':2 'life':1 'short':4 'very':3
                                   'search_artist'  'one':1 'system':2
                                  'search_release'  '40':8 'collection':5 'diamonds':4 'disco':3 'i':1 'love':2 'vol':6,7
                                     'search_rest'  '00disco':4 '00poprockelectronic':1 '08':9,10 'best':8 'disco':3 'electronic':15 'italo':5 'one':11,12 'rose':6 'system':13,14 'the':7 'waves':2 'we':16
                                    'search_combo'  '00disco':18 '00poprockelectronic':15 '08':23,24 '40':14C 'best':22 'collection':11C 'diamonds':10C 'disco':9C,17 'electronic':29 'i':7C 'is':2A 'italo':19 'life':1A 'love':8C 'one':5B,25,26 'rose':20 'short':4A 'system':6B,27,28 'the':21 'very':3A 'vol':12C,13C 'waves':16 'we':30
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  9B
                                           '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-2', 'q-grit-1']
                                      'lastfmtags'  ['gianfranco bortolotti', 'italo disco', 'electronic', 'pop', 'synthpop']
                                        'tag_date'  1985
                                     'discogstags'  ['italo-disco', 'electronic']

============================== file details ==============================
                                           'mtime'  1620610636.98983  (2021-05-10 03:37:16)
                             'size'  8538855