======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '153'
                                          'artist'  'The Beatles'
                                     'text_people'  ''
                                         'release'  'Let It Be Naked'
                                           'title'  'Get Back'
                                           'quals'  ("['Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-4', "
 "'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['pop', 'rock', '60s', 'british', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '101'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'rock-unsorted;set-pl-billboard'
                                             'bpm'  '124.2'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:Cover Image'                                  type PictureType.COVER_FRONT (Cover (front)) b'Cover Image'
                                     
'POPM:'                                             POPM(email='', rating=153, count=0)
'TALB' (Album/Movie/Show title)                     'Let It Be Naked'
'TBPM' (BPM (beats per minute))                     '124.2'
'TCON' (Content type, a.k.a. Genre)                 ['rock-unsorted', 'set-pl-billboard']
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Get Back'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Beatles'
'TPE2' (Band/orchestra/accompaniment)               'The Beatles'
'TRCK' (Track number/Position in set)               '101'
'TXXX:FMPS_Rating'                                  '0.6'
'TXXX:MP3GAIN_MINMAX'                               '099,206'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['pop', 'rock', '60s', 'british', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.46 dB'
'TXXX:replaygain_track_peak'                        '0.517305'

========================== row from database ==========================
                                              'id'  1294347
                                            'path'  /data/Music/Bulk/00poprockelectronic/The Beatles/Beatles, The__Let It Be Naked__101 - Get Back.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  153
                                           'genre'  rock-unsorted;set-pl-billboard
                                        'filesize'  3734390
                                           'mtime'  1620391993
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Beatles, The__Let Naked__101 rock unsorted;set pl billboard
                                      'tag_artist'  The Beatles
                                     'tag_release'  Let It Be Naked
                                       'tag_title'  Get Back
                                             'bpm'  124.2
                                    'search_title'  'back':2 'get':1
                                   'search_artist'  'beatles':2 'the':1
                                  'search_release'  'be':3 'it':2 'let':1 'naked':4
                                     'search_rest'  '00poprockelectronic':1 '101':7 'beatles':2,3 'billboard':14 'let':5 'naked':6 'pl':13 'rock':8 'set':10,12 'the':4 'unsorted':9,11
                                    'search_combo'  '00poprockelectronic':9 '101':15 'back':2A 'be':7C 'beatles':4B,10,11 'billboard':22 'get':1A 'it':6C 'let':5C,13 'naked':8C,14 'pl':21 'rock':16 'set':18,20 'the':3B,12 'unsorted':17,19
                                    'tag_tracknum'  101
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['pop', 'rock', '60s', 'british', 'classic rock']
                                        'tag_date'  2003
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620391992.6705015  (2021-05-07 14:53:12)
                             'size'  3734390