<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '109'
                                          'artist'  'J.B. &amp; The Playboys'
                                     'text_people'  ''
                                         'release'  'Tape No191 - Time For Love'
                                           'title'  "I'm Not Satisfied"
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HAP-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['all']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;set-pl-garagetapes'
                                             'bpm'  '145.5'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f9537d81490>

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''<br/>                                     <img style="width:150px" src="image?fid=1512509"/>
'COMM::eng'                                         'http://garagetapes.blogspot.gr/'
'TALB' (Album/Movie/Show title)                     'Tape No191 - Time For Love'
'TBPM' (BPM (beats per minute))                     '145.5'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-garage', 'set-pl-garagetapes']
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         "I'm Not Satisfied"
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'J.B. &amp; The Playboys'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '01'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:country'                                      'CA'
'TXXX:lastfmtags'                                   'all'
'TXXX:q-bass'                                       '3'
'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-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+22.55 dB'
'TXXX:replaygain_track_peak'                        '0.020753'
'TXXX:tracknum'                                     '01'

========================== row from database ==========================
                                              'id'  1512509
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT191/01 - J.B. & The Playboys - I_m Not Satisfied (1965 CA) (RCA Victor).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  109
                                           'genre'  rock-gr-garage;set-pl-garagetapes
                                        'filesize'  2705285
                                           'mtime'  1620385136
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT191 01 I_m (1965 CA) (RCA Victor) rock gr garage;set pl garagetapes
                                      'tag_artist'  J.B. & The Playboys
                                     'tag_release'  Tape No191 - Time For Love
                                       'tag_title'  I'm Not Satisfied
                                             'bpm'  145.5
                                    'search_title'  'i':1 'im':3 'm':2 'not':4 'satisfied':5
                                   'search_artist'  'b':2 'j':1 'jb':3 'playboys':5 'the':4
                                  'search_release'  'for':4 'love':5 'no191':2 'tape':1 'time':3
                                     'search_rest'  '1965':8,9 'blogspot':2 'ca':10,11 'com':3 'garage':18,20 'garagetapes':1,23 'garagetapesblogspotcom':4 'gr':17 'gt191':5 'i':6 'm':7 'pl':22 'rca':12,13 'rock':16 'set':19,21 'victor':14,15
                                    'search_combo'  '1965':23,24 'b':7B 'blogspot':17 'ca':25,26 'com':18 'for':14C 'garage':33,35 'garagetapes':16,38 'garagetapesblogspotcom':19 'gr':32 'gt191':20 'i':1A,21 'im':3A 'j':6B 'jb':8B 'love':15C 'm':2A,22 'no191':12C 'not':4A 'pl':37 'playboys':10B 'rca':27,28 'rock':31 'satisfied':5A 'set':34,36 'tape':11C 'the':9B 'time':13C 'victor':29,30
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', '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-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['all']
                                        'tag_date'  1965
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620385135.927489  (2021-05-07 12:58:55)
                             'size'  2705285