======================== unified (from filesystem) ========================
                                         'bitrate'  '189.672'
                                        'duration'  '458'
                                          'artist'  'Mr. Zivago'
                                     'text_people'  ''
                                         'release'  'I Love Disco Diamonds Collection Vol. 7'
                                           'title'  'Little Russian'
                                           'quals'  ("['Q-HAP-4', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-1', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['italo disco', '80s', 'disco', 'italo-disco', 'eurobeat']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'electronic-we-disco or italo'
                                             'bpm'  '116.0'
                                             '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. 7'
'TBPM' (BPM (beats per minute))                     '116.0'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-disco or italo'
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Little Russian'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Mr. Zivago'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '7'
'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', '80s', 'disco', 'italo-disco', 'eurobeat']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.83 dB'
'TXXX:replaygain_track_peak'                        '0.550683'

========================== row from database ==========================
                                              'id'  1336834
                                            'path'  /data/Music/Bulk/00poprockelectronic-waves-disco/00disco-italo/Rose - The Best Italo Disco/(07) [Mr. Zivago] Little Russian.mp3
                                         'working'  None
                                         'bitrate'  189
                                    'duration_sec'  458
                                           'genre'  electronic-we-disco or italo
                                        'filesize'  10869101
                                           'mtime'  1620610594
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic waves disco 00disco italo Rose The Best Italo (07) [Mr. Zivago] electronic we disco or italo
                                      'tag_artist'  Mr. Zivago
                                     'tag_release'  I Love Disco Diamonds Collection Vol. 7
                                       'tag_title'  Little Russian
                                             'bpm'  116.0
                                    'search_title'  'little':1 'russian':2
                                   'search_artist'  'mr':1,2 'zivago':3
                                  'search_release'  '7':8 'collection':5 'diamonds':4 'disco':3 'i':1 'love':2 'vol':6,7
                                     'search_rest'  '00disco':4 '00poprockelectronic':1 '07':9,10 'best':8 'disco':3 'electronic':15 'italo':5 'mr':11,12 'or':17 'rose':6 'the':7 'waves':2 'we':16 'zivago':13,14
                                    'search_combo'  '00disco':17 '00poprockelectronic':14 '07':22,23 '7':13C 'best':21 'collection':10C 'diamonds':9C 'disco':8C,16 'electronic':28 'i':6C 'italo':18 'little':1A 'love':7C 'mr':3B,4B,24,25 'or':30 'rose':19 'russian':2A 'the':20 'vol':11C,12C 'waves':15 'we':29 'zivago':5B,26,27
                                    'tag_tracknum'  7
                                      '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-2', 'Q-HAP-4', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['italo disco', '80s', 'disco', 'italo-disco', 'eurobeat']
                                        'tag_date'  1985
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620610594.2423215  (2021-05-10 03:36:34)
                             'size'  10869101