======================== unified (from filesystem) ========================
                                         'bitrate'  '167.192'
                                        'duration'  '506'
                                          'artist'  'Metamorphosis'
                                     'text_people'  ''
                                         'release'  'progsoup 18'
                                           'title'  'Song For My Son'
                                           '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-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['progressive rock', 'post hardcore', 'minimalism', 'hardcore', 'avant "
 "garde', 'experimental']")
                                     'discogstags'  "['industrial', 'electronic', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '30'
                                      'tracktotal'  ''
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive;set-pl-progspace'
                                             'bpm'  '94.021'
                                             'key'  '8A'
                                        '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 18'
'TBPM' (BPM (beats per minute))                     '94.021'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-progressive', 'set-pl-progspace']
'TDRC' (Recording time)                             '2009'
'TIT2' (Title/songname/content description)         'Song For My Son'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '89478485'
'TPE1' (Lead performer(s)/Soloist(s))               'Metamorphosis'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '30'
'TSSE' (Software/Hardware and settings used for encoding)  'LAME v3.98 (beta 5, Aug 12 2007)'
'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:discogstags'                                  ['industrial', 'electronic', 'experimental']
'TXXX:lastfmtags'                                   ['progressive rock',
 'post hardcore',
 'minimalism',
 'hardcore',
 'avant garde',
 'experimental']
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.33 dB'
'TXXX:replaygain_track_peak'                        '0.396276'

========================== row from database ==========================
                                              'id'  1412587
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/PROGSOUP/progsoup 18/1030 metamorphosis - Song For My Son.mp3
                                         'working'  None
                                         'bitrate'  167
                                    'duration_sec'  506
                                           'genre'  rock-cppex-progressive;set-pl-progspace
                                        'filesize'  10592504
                                           'mtime'  1620736699
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy PROGSOUP 1030 metamorphosis rock cppex progressive;set pl progspace
                                      'tag_artist'  Metamorphosis
                                     'tag_release'  progsoup 18
                                       'tag_title'  Song For My Son
                                             'bpm'  94.021
                                    'search_title'  'for':2 'my':3 'son':4 'song':1
                                   'search_artist'  'metamorphosis':1
                                  'search_release'  '18':2 'progsoup':1
                                     'search_rest'  '1030':3 'classicprogpsy':1 'cppex':6 'metamorphosis':4 'pl':11 'progressive':7,9 'progsoup':2 'progspace':12 'rock':5 'set':8,10
                                    'search_combo'  '1030':10 '18':7C 'classicprogpsy':8 'cppex':13 'for':2A 'metamorphosis':5B,11 'my':3A 'pl':18 'progressive':14,16 'progsoup':6C,9 'progspace':19 'rock':12 'set':15,17 'son':4A 'song':1A
                                    'tag_tracknum'  30
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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'  ['progressive rock', 'post hardcore', 'minimalism', 'hardcore', 'avant garde', 'experimental']
                                        'tag_date'  2009
                                     'discogstags'  ['industrial', 'electronic', 'experimental']

============================== file details ==============================
                                           'mtime'  1620736699.137539  (2021-05-11 14:38:19)
                             'size'  10592504