======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '861'
                                          'artist'  'Crosby, Stills, Nash & Young'
                                     'text_people'  ''
                                         'release'  'Progsoup 42'
                                           'title'  'Carry On'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['folk rock', '60s', '70s', 'rock', 'folk', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  ''
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive'
                                             'bpm'  '120.53'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     'Progsoup 42'
'TBPM' (BPM (beats per minute))                     '120.53'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-progressive'
'TDRC' (Recording time)                             '1971'
'TIT2' (Title/songname/content description)         'Carry On'
'TKEY' (Initial key)                                '10A'
'TLEN' (Length)                                     '0'
'TPE1' (Lead performer(s)/Soloist(s))               'Crosby, Stills, Nash & Young'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '2/2'
'TPUB' (Publisher)                                  'Atlantic'
'TRCK' (Track number/Position in set)               '13'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['folk rock', '60s', '70s', 'rock', 'folk', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.70 dB'
'TXXX:replaygain_track_peak'                        '0.492145'

========================== row from database ==========================
                                              'id'  1412486
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/PROGSOUP/progsoup 42/2435 crosby stills nash & young -  carry on.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  861
                                           'genre'  rock-cppex-progressive
                                        'filesize'  34453148
                                           'mtime'  1620737400
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy PROGSOUP progsoup 2435 crosby stills nash young carry on rock cppex progressive
                                      'tag_artist'  Crosby, Stills, Nash & Young
                                     'tag_release'  Progsoup 42
                                       'tag_title'  Carry On
                                             'bpm'  120.53
                                    'search_title'  'carry':1 'on':2
                                   'search_artist'  'crosby':1,2 'nash':5 'stills':3,4 'young':6
                                  'search_release'  '42':2 'progsoup':1
                                     'search_rest'  '2435':3 'carry':8 'classicprogpsy':1 'cppex':11 'crosby':4 'nash':6 'on':9 'progressive':12 'progsoup':2 'rock':10 'stills':5 'young':7
                                    'search_combo'  '2435':13 '42':10C 'carry':1A,18 'classicprogpsy':11 'cppex':21 'crosby':3B,4B,14 'nash':7B,16 'on':2A,19 'progressive':22 'progsoup':9C,12 'rock':20 'stills':5B,6B,15 'young':8B,17
                                    'tag_tracknum'  13
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['folk rock', '60s', '70s', 'rock', 'folk', 'classic rock']
                                        'tag_date'  1971
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737400.451091  (2021-05-11 14:50:00)
                             'size'  34453148