======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '453'
                                          'artist'  'Daft Punk'
                                     'text_people'  ''
                                         'release'  'Homework'
                                           'title'  "Rock'n Roll"
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-3', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'house', 'electronica', 'electronic', 'techno']"
                                     'discogstags'  "['electronic', 'house', 'techno', 'disco']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  ''
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno'
                                             'bpm'  '134.824'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Homework'
'TBPM' (BPM (beats per minute))                     '134.824'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno'
'TDRC' (Recording time)                             '1997'
'TIT2' (Title/songname/content description)         "Rock'n Roll"
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Daft Punk'
'TRCK' (Track number/Position in set)               '11'
'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'                                  ['electronic', 'house', 'techno', 'disco']
'TXXX:lastfmtags'                                   ['dance', 'house', 'electronica', 'electronic', 'techno']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.09 dB'
'TXXX:replaygain_track_peak'                        '0.565143'

========================== row from database ==========================
                                              'id'  1496982
                                            'path'  /data/Music/Bulk/00poprockelectronic/Daft Punk/Homework/MBZ;#Daft Punk;#Homework;#11;#Rock_n Roll.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  453
                                           'genre'  electronic-th-techno
                                        'filesize'  10894841
                                           'mtime'  1620568788
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic MBZ;#Daft Punk;#Homework;#11;#Rock_n electronic th techno
                                      'tag_artist'  Daft Punk
                                     'tag_release'  Homework
                                       'tag_title'  Rock'n Roll
                                             'bpm'  134.824
                                    'search_title'  'n':2 'rock':1 'rockn':3 'roll':4
                                   'search_artist'  'daft':1 'punk':2
                                  'search_release'  'homework':1
                                     'search_rest'  '00poprockelectronic':1 '11':8,13 'daft':3,5 'electronic':16 'homework':7,12 'mbz':2,4 'n':10,15 'punk':6,11 'rock':9,14 'techno':18 'th':17
                                    'search_combo'  '00poprockelectronic':8 '11':15,20 'daft':5B,10,12 'electronic':23 'homework':7C,14,19 'mbz':9,11 'n':2A,17,22 'punk':6B,13,18 'rock':1A,16,21 'rockn':3A 'roll':4A 'techno':25 'th':24
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-4', 'q-other-1', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'house', 'electronica', 'electronic', 'techno']
                                        'tag_date'  1997
                                     'discogstags'  ['electronic', 'house', 'techno', 'disco']

============================== file details ==============================
                                           'mtime'  1620568788.3417535  (2021-05-09 15:59:48)
                             'size'  10894841