<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '165'
                                          'artist'  'Los Gatos Salvajes'
                                     'text_people'  ''
                                         'release'  'Psychodelicias Vol. 8'
                                           'title'  'Haras lo que te pida'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-3', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['beat', 'garage', 'all', 'argentina', '60s']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '07'
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'rock-cppex-psychedelic'
                                             'bpm'  '133.668'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f95382f1910>

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''<br/>                                     <img style="width:150px" src="image?fid=1415417"/>
'POPM:'                                             POPM(email='', rating=0, count=0)
'PRIV:AverageLevel:{\t\x00\x00'                     PRIV(owner='AverageLevel', data=b'{\t\x00\x00')
'PRIV:PeakValue:!E\x00\x00'                         PRIV(owner='PeakValue', data=b'!E\x00\x00')
'TALB' (Album/Movie/Show title)                     'Psychodelicias Vol. 8'
'TBPM' (BPM (beats per minute))                     '133.668'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-psychedelic'
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         'Haras lo que te pida'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Los Gatos Salvajes'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '07'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['beat', 'garage', 'all', 'argentina', '60s']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.14 dB'
'TXXX:replaygain_track_peak'                        '0.541664'

========================== row from database ==========================
                                              'id'  1415417
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Psychodelicias vol.08 (spanish 60s)/07. Los Gatos Salvajes - Haras lo que te pida.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  165
                                           'genre'  rock-cppex-psychedelic
                                        'filesize'  2833332
                                           'mtime'  1620736891
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy vol.08 (spanish 60s) 07. rock cppex psychedelic
                                      'tag_artist'  Los Gatos Salvajes
                                     'tag_release'  Psychodelicias Vol. 8
                                       'tag_title'  Haras lo que te pida
                                             'bpm'  133.668
                                    'search_title'  'haras':1 'lo':2 'pida':5 'que':3 'te':4
                                   'search_artist'  'gatos':2 'los':1 'salvajes':3
                                  'search_release'  '8':4 'psychodelicias':1 'vol':2,3
                                     'search_rest'  '07':9,10 '08':3 '60s':7,8 'classicprogpsy':1 'cppex':12 'psychedelic':13 'rock':11 'spanish':5,6 'vol':2 'vol08':4
                                    'search_combo'  '07':21,22 '08':15 '60s':19,20 '8':12C 'classicprogpsy':13 'cppex':24 'gatos':7B 'haras':1A 'lo':2A 'los':6B 'pida':5A 'psychedelic':25 'psychodelicias':9C 'que':3A 'rock':23 'salvajes':8B 'spanish':17,18 'te':4A 'vol':10C,11C,14 'vol08':16
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['beat', 'garage', 'all', 'argentina', '60s']
                                        'tag_date'  1965
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620736890.9822671  (2021-05-11 14:41:30)
                             'size'  2833332