======================== unified (from filesystem) ========================
                                         'bitrate'  '317.236'
                                        'duration'  '93'
                                          'artist'  'Guitar Wolf'
                                     'text_people'  ''
                                         'release'  "Rock'n'roll Etiquette"
                                           'title'  "Rock'n'roll Etiquette"
                                           'quals'  ("['Q-OLDST-3', 'Q-LOCALNESS-2', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HAP-2', "
 "'Q-HHRNBTT-1', 'Q-GRIT-3', 'q-bass-3', 'q-drums-1', 'q-other-3', "
 "'q-piano-1', 'q-vocals-4', 'Q-SYN-2', 'Q-BUSY-3', 'Q-PLAY-2', 'Q-CHART-2', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['garage punk', 'punk', 'j-rock', 'japanese', 'garage rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;loc-asia-japan'
                                             'bpm'  '134.2'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "Rock'n'roll Etiquette"
'TBPM' (BPM (beats per minute))                     '134.2'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-garage', 'loc-asia-japan']
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         "Rock'n'roll Etiquette"
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Guitar Wolf'
'TPUB' (Publisher)                                  'Narnack'
'TRCK' (Track number/Position in set)               '15'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '3'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['garage punk', 'punk', 'j-rock', 'japanese', 'garage rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.41 dB'
'TXXX:replaygain_track_peak'                        '0.227827'

========================== row from database ==========================
                                              'id'  1529552
                                            'path'  /data/Music/Bulk/00localcharacter/Guitar Wolf/Rock_n_roll Etiquette (2002)/15 - Rock_n_roll Etiquette.mp3
                                         'working'  None
                                         'bitrate'  317
                                    'duration_sec'  93
                                           'genre'  rock-gr-garage;loc-asia-japan
                                        'filesize'  3716065
                                           'mtime'  1620385934
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter Rock_n_roll (2002) 15 Rock_n_roll rock gr garage;loc asia japan
                                      'tag_artist'  Guitar Wolf
                                     'tag_release'  Rock'n'roll Etiquette
                                       'tag_title'  Rock'n'roll Etiquette
                                             'bpm'  134.2
                                    'search_title'  'etiquette':5 'n':2 'rock':1 'rocknroll':4 'roll':3
                                   'search_artist'  'guitar':1 'wolf':2
                                  'search_release'  'etiquette':5 'n':2 'rock':1 'rocknroll':4 'roll':3
                                     'search_rest'  '2002':4,5 'asia':12 'garage':8,10 'gr':7 'japan':13 'loc':9,11 'n':2 'rock':1,6 'roll':3
                                    'search_combo'  '2002':16,17 'asia':24 'etiquette':5A,12C 'garage':20,22 'gr':19 'guitar':6B 'japan':25 'loc':21,23 'n':2A,9C,14 'rock':1A,8C,13,18 'rocknroll':4A,11C 'roll':3A,10C,15 'wolf':7B
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-3', 'Q-GRIT-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-1', 'Q-SYN-2', 'q-other-3', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-3']
                                      'lastfmtags'  ['garage punk', 'punk', 'j-rock', 'japanese', 'garage rock']
                                        'tag_date'  2002
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620385934.3987823  (2021-05-07 13:12:14)
                             'size'  3716065