======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '106'
                                          'artist'  'Keys'
                                     'text_people'  ''
                                         'release'  'Tape No145 - Louie Louie (Part II)'
                                           'title'  'Keys'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HAP-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'Q-PLAY-3', 'q-bass-1', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-4', 'q-chart-1', 'q-drums-2', 'q-other-3', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['hip-hop', 'hip hop', 'new wave', 'baltimore', 'underground hip-hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '16'
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;set-pl-garagetapes'
                                             'bpm'  '124.9'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'http://garagetapes.blogspot.gr/'
'TALB' (Album/Movie/Show title)                     'Tape No145 - Louie Louie (Part II)'
'TBPM' (BPM (beats per minute))                     '124.9'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-garage', 'set-pl-garagetapes']
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         'Keys'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Keys'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '16'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['hip-hop', 'hip hop', 'new wave', 'baltimore', 'underground hip-hop']
'TXXX:other'                                        'US'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+23.32 dB'
'TXXX:replaygain_track_peak'                        '0.037838'
'TXXX:tracknum'                                     '16'

========================== row from database ==========================
                                              'id'  503390
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT145/16 - Keys (196 US).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  106
                                           'genre'  rock-gr-garage;set-pl-garagetapes
                                        'filesize'  2638496
                                           'mtime'  1620574104
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT145 16 (196 US) rock gr garage;set pl garagetapes
                                      'tag_artist'  Keys
                                     'tag_release'  Tape No145 - Louie Louie (Part II)
                                       'tag_title'  Keys
                                             'bpm'  124.9
                                    'search_title'  'keys':1
                                   'search_artist'  'keys':1
                                  'search_release'  'ii':6,7 'louie':3 'no145':2 'part':4,5 'tape':1
                                     'search_rest'  '196':6,7 'blogspot':2 'com':3 'garage':12,14 'garagetapes':1,17 'garagetapesblogspotcom':4 'gr':11 'gt145':5 'pl':16 'rock':10 'set':13,15 'us':8,9
                                    'search_combo'  '196':15,16 'blogspot':11 'com':12 'garage':21,23 'garagetapes':10,26 'garagetapesblogspotcom':13 'gr':20 'gt145':14 'ii':8C,9C 'keys':1A,2B 'louie':5C 'no145':4C 'part':6C,7C 'pl':25 'rock':19 'set':22,24 'tape':3C 'us':17,18
                                    'tag_tracknum'  16
                                      'num_images'  1
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['hip-hop', 'hip hop', 'new wave', 'baltimore', 'underground hip-hop']
                                        'tag_date'  1965
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620574104.0563862  (2021-05-09 17:28:24)
                             'size'  2638496