======================== unified (from filesystem) ========================
                                         'bitrate'  '229.781'
                                        'duration'  '286'
                                          'artist'  'Nirvana'
                                     'text_people'  ''
                                         'release'  'Smells Like Teen Spirit'
                                           'title'  'Aneurysm'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['alternative rock', '90s', 'alternative', 'grunge', 'rock']"
                                     'discogstags'  "['rock', 'grunge']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'rock-gr-grunge'
                                             'bpm'  '86.474'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Smells Like Teen Spirit'
'TBPM' (BPM (beats per minute))                     '86.474'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-grunge'
'TDRC' (Recording time)                             '1991'
'TIT2' (Title/songname/content description)         'Aneurysm'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Nirvana'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'grunge']
'TXXX:lastfmtags'                                   ['alternative rock', '90s', 'alternative', 'grunge', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.92 dB'
'TXXX:replaygain_track_peak'                        '0.707595'

========================== row from database ==========================
                                              'id'  1295409
                                            'path'  /data/Music/Bulk/00poprockelectronic/Nirvana/MBZ;#Nirvana;#Smells Like Teen Spirit;#03;#Aneurysm.mp3
                                         'working'  None
                                         'bitrate'  229
                                    'duration_sec'  286
                                           'genre'  rock-gr-grunge
                                        'filesize'  8240603
                                           'mtime'  1636902985
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic MBZ;#Nirvana;#Smells Spirit;#03;#Aneurysm rock gr grunge
                                      'tag_artist'  Nirvana
                                     'tag_release'  Smells Like Teen Spirit
                                       'tag_title'  Aneurysm
                                             'bpm'  86.474
                                    'search_title'  'aneurysm':1
                                   'search_artist'  'nirvana':1
                                  'search_release'  'like':2 'smells':1 'spirit':4 'teen':3
                                     'search_rest'  '00poprockelectronic':1 '03':9,12 'aneurysm':10,13 'gr':15 'grunge':16 'mbz':2,5 'nirvana':3,6 'rock':14 'smells':4,7 'spirit':8,11
                                    'search_combo'  '00poprockelectronic':7 '03':15,18 'aneurysm':1A,16,19 'gr':21 'grunge':22 'like':4C 'mbz':8,11 'nirvana':2B,9,12 'rock':20 'smells':3C,10,13 'spirit':6C,14,17 'teen':5C
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['alternative rock', '90s', 'alternative', 'grunge', 'rock']
                                        'tag_date'  1991
                                     'discogstags'  ['rock', 'grunge']

============================== file details ==============================
                                           'mtime'  1636902984.8481896  (2021-11-14 16:16:24)
                             'size'  8240603