======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '173'
                                          'artist'  'Marty Robbins'
                                     'text_people'  'Jerry Livingston; Mack David'
                                         'release'  'A Lifetime of Song (1951-1982)'
                                           'title'  'The Hanging Tree'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['classic country', 'americana', 'country', 'male vocalists', '50s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  ''
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '89.217'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '59-234 POS 38'
'COMM:ID3v1 Comment:XXX'                            '59-234 POS 38'
'MCDI' (Music CD identifier)                        MCDI(data=b'1\x004\x00+\x009\x006\x00+\x003\x001\x002\x001\x00+\x006\x000\x005\x004\x00+\x008\x00D\x007\x00E\x00+\x00B\x004\x000\x002\x00+\x00D\x00F\x003\x009\x00+\x001\x000\x00B\x007\x003\x00+\x001\x003\x008\x002\x008\x00+\x001\x007\x000\x006\x00D\x00+\x001\x009\x003\x00D\x004\x00+\x001\x00C\x006\x00B\x00A\x00+\x002\x001\x009\x003\x00A\x00+\x002\x005\x00E\x009\x00C\x00+\x002\x009\x001\x006\x004\x00+\x002\x00B\x00E\x001\x002\x00+\x003\x000\x009\x005\x008\x00+\x003\x004\x004\x000\x009\x00+\x003\x008\x002\x009\x005\x00+\x003\x00B\x000\x000\x006\x00+\x003\x00E\x003\x004\x006\x00+\x004\x001\x00E\x007\x009\x00\x00\x00')
'PRIV:AverageLevel:/\x0c\x00\x00'                   PRIV(owner='AverageLevel', data=b'/\x0c\x00\x00')
'PRIV:PeakValue:DR\x00\x00'                         PRIV(owner='PeakValue', data=b'DR\x00\x00')
'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')
'PRIV:WM/Provider:A\x00M\x00G\x00\x00\x00'          PRIV(owner='WM/Provider', data=b'A\x00M\x00G\x00\x00\x00')
'PRIV:WM/UniqueFileIdentifier:A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x00 \x009\x003\x008\x007\x004\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x001\x007\x009\x004\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x00 \x006\x008\x007\x004\x005\x007\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x00 \x009\x003\x008\x007\x004\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x001\x007\x009\x004\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x00 \x006\x008\x007\x004\x005\x007\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:\x16±o\x8dQ\x1eêN´¶÷^ĦYR'  PRIV(owner='WM/WMCollectionGroupID', data=b'\x16\xb1o\x8dQ\x1e\xeaN\xb4\xb6\xf7^\xc4\xa6YR')
'PRIV:WM/WMCollectionID:\x16±o\x8dQ\x1eêN´¶÷^ĦYR'  PRIV(owner='WM/WMCollectionID', data=b'\x16\xb1o\x8dQ\x1e\xeaN\xb4\xb6\xf7^\xc4\xa6YR')
'PRIV:WM/WMContentID:«\x9bj\x13E8\x8fG\x8fFÛ\xad\x06´]h'  PRIV(owner='WM/WMContentID', data=b'\xab\x9bj\x13E8\x8fG\x8fF\xdb\xad\x06\xb4]h')
'TALB' (Album/Movie/Show title)                     'A Lifetime of Song (1951-1982)'
'TBPM' (BPM (beats per minute))                     '89.217'
'TCOM' (Composer)                                   'Jerry Livingston; Mack David'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1959'
'TIT2' (Title/songname/content description)         'The Hanging Tree'
'TKEY' (Initial key)                                '1A'
'TLEN' (Length)                                     '173333'
'TPE1' (Lead performer(s)/Soloist(s))               'Marty Robbins'
'TPE2' (Band/orchestra/accompaniment)               'Marty Robbins'
'TPUB' (Publisher)                                  'Columbia'
'TRCK' (Track number/Position in set)               '13'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['classic country', 'americana', 'country', 'male vocalists', '50s']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.85 dB'
'TXXX:replaygain_track_peak'                        '0.540772'

========================== row from database ==========================
                                              'id'  1438908
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1959/59-234 - Marty Robbins - The Hanging Tree.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  173
                                           'genre'  prerock-unsorted
                                        'filesize'  6937146
                                           'mtime'  1621698405
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1959 59 234 prerock unsorted
                                      'tag_artist'  Marty Robbins
                                     'tag_release'  A Lifetime of Song (1951-1982)
                                       'tag_title'  The Hanging Tree
                                             'bpm'  89.217
                                    'search_title'  'hanging':2 'the':1 'tree':3
                                   'search_artist'  'marty':1 'robbins':2
                                  'search_release'  '1951':5 '19511982':7 '1982':6 'a':1 'lifetime':2 'of':3 'song':4
                                     'search_rest'  '00oldiepop':5 '1959':6 '234':8 '59':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'unsorted':10
                                    'search_combo'  '00oldiepop':17 '1951':10C '19511982':12C '1959':18 '1982':11C '234':20 '59':19 'a':6C 'country':16 'exotica':14 'hanging':2A 'jazz':13 'lifetime':7C 'marty':4B 'of':8C 'oldies':15 'prerock':21 'robbins':5B 'song':9C 'the':1A 'tree':3A 'unsorted':22
                                    'tag_tracknum'  13
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['classic country', 'americana', 'country', 'male vocalists', '50s']
                                        'tag_date'  1959
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698405.4440536  (2021-05-22 17:46:45)
                             'size'  6937146