======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '180'
                                          'artist'  'Bobby Bare'
                                     'text_people'  'Bobby Bare'
                                         'release'  'The Essential'
                                           'title'  'The All American Boy'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country', 'singer songwriter', 'old country', 'classic country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '145.371'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '59-027 POS 2'
'COMM:ID3v1 Comment:XXX'                            '59-027 POS 2'
'MCDI' (Music CD identifier)                        MCDI(data=b'1\x004\x00+\x009\x006\x00+\x003\x005\x008\x004\x00+\x006\x006\x005\x005\x00+\x009\x008\x008\x00A\x00+\x00C\x008\x003\x00E\x00+\x00F\x00B\x005\x001\x00+\x001\x002\x00C\x003\x002\x00+\x001\x004\x00E\x003\x005\x00+\x001\x007\x00D\x002\x007\x00+\x001\x00A\x00B\x00C\x006\x00+\x001\x00D\x00B\x007\x00D\x00+\x002\x000\x002\x00E\x009\x00+\x002\x003\x00D\x009\x000\x00+\x002\x006\x00F\x002\x002\x00+\x002\x00A\x003\x006\x00B\x00+\x002\x00D\x008\x00A\x004\x00+\x003\x001\x001\x001\x00B\x00+\x003\x004\x009\x005\x001\x00+\x003\x00A\x007\x00B\x001\x00+\x003\x00C\x00E\x00D\x00D\x00+\x004\x000\x001\x007\x003\x00\x00\x00')
'PRIV:AverageLevel:¬\x12\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xac\x12\x00\x00')
'PRIV:PeakValue:\x0b{\x00\x00'                      PRIV(owner='PeakValue', data=b'\x0b{\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 \x002\x004\x006\x003\x002\x004\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x001\x005\x001\x009\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x001\x004\x009\x000\x002\x007\x002\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x002\x004\x006\x003\x002\x004\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x001\x005\x001\x009\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x001\x004\x009\x000\x002\x007\x002\x00\x00\x00')
"PRIV:WM/WMCollectionGroupID:\x06\x1ai^ÃlÏL¨QfÿE\n\x98'"  PRIV(owner='WM/WMCollectionGroupID', data=b"\x06\x1ai^\xc3l\xcfL\xa8Qf\xffE\n\x98'")
"PRIV:WM/WMCollectionID:\x06\x1ai^ÃlÏL¨QfÿE\n\x98'"  PRIV(owner='WM/WMCollectionID', data=b"\x06\x1ai^\xc3l\xcfL\xa8Qf\xffE\n\x98'")
"PRIV:WM/WMContentID:ml\x17\x1f\x0c\x1d\tA\x8f²'\x01\xa0\x1a\x16\x7f"  PRIV(owner='WM/WMContentID', data=b"ml\x17\x1f\x0c\x1d\tA\x8f\xb2'\x01\xa0\x1a\x16\x7f")
'TALB' (Album/Movie/Show title)                     'The Essential'
'TBPM' (BPM (beats per minute))                     '145.371'
'TCOM' (Composer)                                   'Bobby Bare'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1959'
'TIT2' (Title/songname/content description)         'The All American Boy'
'TKEY' (Initial key)                                '1A'
'TLEN' (Length)                                     '180666'
'TPE1' (Lead performer(s)/Soloist(s))               'Bobby Bare (Bill Parsons)'
'TPE2' (Band/orchestra/accompaniment)               'Bobby Bare'
'TPUB' (Publisher)                                  'RCA'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['country', 'singer songwriter', 'old country', 'classic country']
'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'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.25 dB'
'TXXX:replaygain_track_peak'                        '0.482425'

========================== row from database ==========================
                                              'id'  1441910
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1959/59-027 - Bobby Bare (Bill Parsons) - The All American Boy.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  180
                                           'genre'  prerock-unsorted
                                        'filesize'  7227264
                                           'mtime'  1621698395
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1959 59 027 (Bill Parsons) prerock unsorted
                                      'tag_artist'  Bobby Bare
                                     'tag_release'  The Essential
                                       'tag_title'  The All American Boy
                                             'bpm'  145.371
                                    'search_title'  'all':2 'american':3 'boy':4 'the':1
                                   'search_artist'  'bare':2 'bobby':1
                                  'search_release'  'essential':2 'the':1
                                     'search_rest'  '00oldiepop':5 '1959':6 '59':7 'bill':8,9 'country':4 'exotica':2 'jazz':1 'oldies':3 'parsons':10,11 'prerock':12 'unsorted':13
                                    'search_combo'  '00oldiepop':13 '1959':14 '59':15 'all':2A 'american':3A 'bare':6B 'bill':16,17 'bobby':5B 'boy':4A 'country':12 'essential':8C 'exotica':10 'jazz':9 'oldies':11 'parsons':18,19 'prerock':20 'the':1A,7C 'unsorted':21
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['country', 'singer songwriter', 'old country', 'classic country']
                                        'tag_date'  1959
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698394.634817  (2021-05-22 17:46:34)
                             'size'  7227264