======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '358'
                                          'artist'  'Deep Purple'
                                     'text_people'  ''
                                         'release'  "Nobody's Perfect (disc 2)"
                                           'title'  'Black Night'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['heavy metal', 'rock', 'hard rock', 'progressive rock', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'eid-metal;rock-cppex'
                                             'bpm'  '143.619'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "Nobody's Perfect (disc 2)"
'TBPM' (BPM (beats per minute))                     '143.619'
'TCON' (Content type, a.k.a. Genre)                 ['eid-metal', 'rock-cppex']
'TIT2' (Title/songname/content description)         'Black Night'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Deep Purple'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['heavy metal', 'rock', 'hard rock', 'progressive rock', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.47 dB'
'TXXX:replaygain_track_peak'                        '0.557663'

========================== row from database ==========================
                                              'id'  1512432
                                            'path'  /data/Music/Bulk/00poprockelectronic/Deep Purple/MBZ;#Deep Purple;#Nobody_s Perfect (disc 2);#04;#Black Night.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  358
                                           'genre'  eid-metal;rock-cppex
                                        'filesize'  8611712
                                           'mtime'  1620737185
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic MBZ;#Deep Purple;#Nobody_s 2);#04;#Black eid metal;rock cppex
                                      'tag_artist'  Deep Purple
                                     'tag_release'  Nobody's Perfect (disc 2)
                                       'tag_title'  Black Night
                                             'bpm'  143.619
                                    'search_title'  'black':1 'night':2
                                   'search_artist'  'deep':1 'purple':2
                                  'search_release'  '2':7,8 'disc':5,6 'nobody':1 'nobodys':3 'perfect':4 's':2
                                     'search_rest'  '00poprockelectronic':1 '04':13,16 '2':12,15 'black':14,17 'cppex':23 'deep':3,5 'eid':18 'mbz':2,4 'metal':19,21 'nobody':7,10 'purple':6,9 'rock':20,22 's':8,11
                                    'search_combo'  '00poprockelectronic':13 '04':25,28 '2':11C,12C,24,27 'black':1A,26,29 'cppex':35 'deep':3B,15,17 'disc':9C,10C 'eid':30 'mbz':14,16 'metal':31,33 'night':2A 'nobody':5C,19,22 'nobodys':7C 'perfect':8C 'purple':4B,18,21 'rock':32,34 's':6C,20,23
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['heavy metal', 'rock', 'hard rock', 'progressive rock', 'classic rock']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737185.039615  (2021-05-11 14:46:25)
                             'size'  8611712