======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '116'
                                          'artist'  'The Crossfires'
                                     'text_people'  ''
                                         'release'  "Tape No215 - Who'll Be The One"
                                           'title'  "Who'll Be The One"
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HAP-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['surf', 'surf rock', 'classic rock', 'all', 'rock']"
                                     'discogstags'  "['surf', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '02'
                                      'tracktotal'  ''
                                            'date'  '1966'
                                        'comments'  ''
                                           'genre'  'rock-gr-garage;set-pl-garagetapes'
                                             'bpm'  '143.7'
                                             'key'  '9A'
                                        '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 No215 - Who'll Be The One"
'TBPM' (BPM (beats per minute))                     '143.7'
'TCON' (Content type, a.k.a. Genre)                 ['rock-gr-garage', 'set-pl-garagetapes']
'TDRC' (Recording time)                             '1966'
'TIT2' (Title/songname/content description)         "Who'll Be The One"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Crossfires'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '02'
'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'                                      'US'
'TXXX:discogstags'                                  ['surf', 'rock']
'TXXX:lastfmtags'                                   ['surf', 'surf rock', 'classic rock', 'all', 'rock']
'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-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+17.57 dB'
'TXXX:replaygain_track_peak'                        '0.041776'
'TXXX:tracknum'                                     '02'

========================== row from database ==========================
                                              'id'  1513355
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/garagetapes.blogspot.com/GT215/02 - The Crossfires - Who_ll Be The One (1966 US) (Tower).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  116
                                           'genre'  rock-gr-garage;set-pl-garagetapes
                                        'filesize'  2850779
                                           'mtime'  1620385327
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm garagetapes.blogspot.com GT215 02 Who_ll (1966 US) (Tower) rock gr garage;set pl garagetapes
                                      'tag_artist'  The Crossfires
                                     'tag_release'  Tape No215 - Who'll Be The One
                                       'tag_title'  Who'll Be The One
                                             'bpm'  143.7
                                    'search_title'  'be':4 'll':2 'one':6 'the':5 'who':1 'wholl':3
                                   'search_artist'  'crossfires':2 'the':1
                                  'search_release'  'be':6 'll':4 'no215':2 'one':8 'tape':1 'the':7 'who':3 'wholl':5
                                     'search_rest'  '1966':8,9 'blogspot':2 'com':3 'garage':16,18 'garagetapes':1,21 'garagetapesblogspotcom':4 'gr':15 'gt215':5 'll':7 'pl':20 'rock':14 'set':17,19 'tower':12,13 'us':10,11 'who':6
                                    'search_combo'  '1966':24,25 'be':4A,14C 'blogspot':18 'com':19 'crossfires':8B 'garage':32,34 'garagetapes':17,37 'garagetapesblogspotcom':20 'gr':31 'gt215':21 'll':2A,12C,23 'no215':10C 'one':6A,16C 'pl':36 'rock':30 'set':33,35 'tape':9C 'the':5A,7B,15C 'tower':28,29 'us':26,27 'who':1A,11C,22 'wholl':3A,13C
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-1', 'q-grit-2']
                                      'lastfmtags'  ['surf', 'surf rock', 'classic rock', 'all', 'rock']
                                        'tag_date'  1966
                                     'discogstags'  ['surf', 'rock']

============================== file details ==============================
                                           'mtime'  1620385327.0363815  (2021-05-07 13:02:07)
                             'size'  2850779