======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '395'
                                          'artist'  'Bill Callahan'
                                     'text_people'  'Bill Callahan'
                                         'release'  'Woke On A Whaleheart'
                                           'title'  'From The Rivers To The Oceans'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['lo fi', 'alt country', 'indie rock', 'folk', 'singer songwriter']"
                                     'discogstags'  "['rock', 'alternative rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-folk'
                                             'bpm'  '85.9'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         ['0',
 ' 00000827 00000B25 00005E57 00004C31 00033934 00033934 00008622 00008A13 '
 '00026FC6 0002AF3E',
 ' 00000000 00000210 0000090C 00000000010A2D64 00000000 0090CE35 00000000 '
 '00000000 00000000 00000000 00000000 00000000']
'COMM:iTunes_CDDB_IDs:eng'                          '9+719400C3E81E21DE5C109C0E61D03430+8729587'
'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 \x001\x000\x002\x001\x007\x008\x005\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x001\x007\x005\x009\x005\x004\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x001\x000\x005\x000\x007\x006\x002\x001\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x001\x000\x002\x001\x007\x008\x005\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x001\x007\x005\x009\x005\x004\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x001\x000\x005\x000\x007\x006\x002\x001\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:þ÷KU,dTL\x9bHH\x07r\x8dÆä'  PRIV(owner='WM/WMCollectionGroupID', data=b'\xfe\xf7KU,dTL\x9bHH\x07r\x8d\xc6\xe4')
'PRIV:WM/WMCollectionID:þ÷KU,dTL\x9bHH\x07r\x8dÆä'  PRIV(owner='WM/WMCollectionID', data=b'\xfe\xf7KU,dTL\x9bHH\x07r\x8d\xc6\xe4')
'PRIV:WM/WMContentID:8\x92\x14DB¿ºA\x80\\,:.f\x12y'  PRIV(owner='WM/WMContentID', data=b'8\x92\x14DB\xbf\xbaA\x80\\,:.f\x12y')
'TALB' (Album/Movie/Show title)                     'Woke On A Whaleheart'
'TBPM' (BPM (beats per minute))                     '85.9'
'TCOM' (Composer)                                   'Bill Callahan'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-folk'
'TDRC' (Recording time)                             '2007'
'TENC' (Encoded by)                                 'iTunes v7.7.1'
'TIT2' (Title/songname/content description)         'From The Rivers To The Oceans'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bill Callahan'
'TPE2' (Band/orchestra/accompaniment)               'Bill Callahan'
'TPUB' (Publisher)                                  'Drag City'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'alternative rock']
'TXXX:lastfmtags'                                   ['lo fi', 'alt country', 'indie rock', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.48 dB'
'TXXX:replaygain_track_peak'                        '0.378834'

========================== row from database ==========================
                                              'id'  1255583
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Bill Callahan/Woke On A Whaleheart/01 from the rivers to the oceans.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  395
                                           'genre'  ifs-songwriter-folk
                                        'filesize'  9497198
                                           'mtime'  1636400719
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 01 from the rivers to the oceans ifs songwriter folk
                                      'tag_artist'  Bill Callahan
                                     'tag_release'  Woke On A Whaleheart
                                       'tag_title'  From The Rivers To The Oceans
                                             'bpm'  85.9
                                    'search_title'  'from':1 'oceans':5 'rivers':3 'the':2 'to':4
                                   'search_artist'  'bill':1 'callahan':2
                                  'search_release'  'a':3 'on':2 'whaleheart':4 'woke':1
                                     'search_rest'  '00singer':1 'eos':3 'folk':10 'from':4 'ifs':9 'oceans':8 'rivers':6 'songwriter':2 'the':5 'to':7
                                    'search_combo'  '00singer':12 'a':10C 'bill':6B 'callahan':7B 'eos':14 'folk':21 'from':1A,15 'ifs':20 'oceans':5A,19 'on':9C 'rivers':3A,17 'songwriter':13 'the':2A,16 'to':4A,18 'whaleheart':11C 'woke':8C
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['lo fi', 'alt country', 'indie rock', 'folk', 'singer songwriter']
                                        'tag_date'  2007
                                     'discogstags'  ['rock', 'alternative rock']

============================== file details ==============================
                                           'mtime'  1636400718.7742267  (2021-11-08 20:45:18)
                             'size'  9497198