======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '284'
                                          'artist'  'Steve Vai'
                                     'text_people'  ''
                                         'release'  'Passion And Warfare'
                                           'title'  'Blue Powder'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-OLDST-2', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-JZFKS-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'guitar', 'guitar virtuoso', 'instrumental rock', 'rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1990'
                                        'comments'  ''
                                           'genre'  'rock-gr;set-pl-progspace'
                                             'bpm'  '122.957'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:h\x17\x00\x00'                   PRIV(owner='AverageLevel', data=b'h\x17\x00\x00')
'PRIV:PeakValue:þ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xfe\x7f\x00\x00')
'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     'Passion And Warfare'
'TBPM' (BPM (beats per minute))                     '122.957'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr', 'set-pl-progspace']
'TDRC' (Recording time)                             '1990'
'TIT2' (Title/songname/content description)         'Blue Powder'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '285565'
'TPE1' (Lead performer(s)/Soloist(s))               'Steve Vai'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['instrumental', 'guitar', 'guitar virtuoso', 'instrumental rock', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.49 dB'
'TXXX:replaygain_track_peak'                        '0.509309'

========================== row from database ==========================
                                              'id'  1342147
                                            'path'  /data/Music/Bulk/00poprockelectronic/Steve Vai/Steve Vai - Passion and Warfare/10 - Blue Powder.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  284
                                           'genre'  rock-gr;set-pl-progspace
                                        'filesize'  4561565
                                           'mtime'  1636903122
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic and 10 rock gr;set pl progspace
                                      'tag_artist'  Steve Vai
                                     'tag_release'  Passion And Warfare
                                       'tag_title'  Blue Powder
                                             'bpm'  122.957
                                    'search_title'  'blue':1 'powder':2
                                   'search_artist'  'steve':1 'vai':2
                                  'search_release'  'and':2 'passion':1 'warfare':3
                                     'search_rest'  '00poprockelectronic':1 'and':2 'gr':4,6 'pl':8 'progspace':9 'rock':3 'set':5,7
                                    'search_combo'  '00poprockelectronic':8 'and':6C,9 'blue':1A 'gr':11,13 'passion':5C 'pl':15 'powder':2A 'progspace':16 'rock':10 'set':12,14 'steve':3B 'vai':4B 'warfare':7C
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['instrumental', 'guitar', 'guitar virtuoso', 'instrumental rock', 'rock']
                                        'tag_date'  1990
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1636903121.7773926  (2021-11-14 16:18:41)
                             'size'  4561565