======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '420'
                                          'artist'  'Peach'
                                     'text_people'  ''
                                         'release'  'Giving Birth to a Stone'
                                           'title'  'You Lied'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['progressive', 'metal', 'progressive metal', 'rock', 'alternative', "
 "'progressive rock']")
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'eid-metal;rock-cppex-progressive'
                                             'bpm'  '127.364'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Giving Birth to a Stone'
'TBPM' (BPM (beats per minute))                     '127.364'
'TCON' (Content type, a.k.a. Genre)                 ['eid-metal', 'rock-cppex-progressive']
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'You Lied'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Peach'
'TRCK' (Track number/Position in set)               '8'
'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:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['progressive',
 'metal',
 'progressive metal',
 'rock',
 'alternative',
 'progressive rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.11 dB'
'TXXX:replaygain_track_peak'                        '0.419121'

========================== row from database ==========================
                                              'id'  1311390
                                            'path'  /data/Music/Bulk/00poprockelectronic/Peach/Giving Birth to a Stone/8 - you lied.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  420
                                           'genre'  eid-metal;rock-cppex-progressive
                                        'filesize'  13460578
                                           'mtime'  1620737809
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 8 you lied eid metal;rock cppex progressive
                                      'tag_artist'  Peach
                                     'tag_release'  Giving Birth to a Stone
                                       'tag_title'  You Lied
                                             'bpm'  127.364
                                    'search_title'  'lied':2 'you':1
                                   'search_artist'  'peach':1
                                  'search_release'  'a':4 'birth':2 'giving':1 'stone':5 'to':3
                                     'search_rest'  '00poprockelectronic':1 '8':2 'cppex':10 'eid':5 'lied':4 'metal':6,8 'progressive':11 'rock':7,9 'you':3
                                    'search_combo'  '00poprockelectronic':9 '8':10 'a':7C 'birth':5C 'cppex':18 'eid':13 'giving':4C 'lied':2A,12 'metal':14,16 'peach':3B 'progressive':19 'rock':15,17 'stone':8C 'to':6C 'you':1A,11
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['progressive', 'metal', 'progressive metal', 'rock', 'alternative', 'progressive rock']
                                        'tag_date'  2000
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620737808.8856785  (2021-05-11 14:56:48)
                             'size'  13460578