======================== unified (from filesystem) ========================
                                         'bitrate'  '32.0'
                                        'duration'  '150'
                                          'artist'  'Fred Lowery'
                                     'text_people'  'Oscar Hammerstein II/Richard Rodgers'
                                         'release'  'Whistle a Happy Tune!'
                                           'title'  'I Whistle a Happy Tune'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['all', 'novelty', 'pop', 'whistling', 'standards']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '96.0'
                                             'key'  '4B'
                                        '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')
'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 \x003\x003\x000\x002\x001\x005\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x001\x007\x008\x008\x005\x006\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x001\x009\x009\x007\x009\x009\x002\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x003\x003\x000\x002\x001\x005\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x001\x007\x008\x008\x005\x006\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x001\x009\x009\x007\x009\x009\x002\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:¸1&ð\x15×\x86F\x9aó^Æâ\x9e\x88\x99'  PRIV(owner='WM/WMCollectionGroupID', data=b'\xb81&\xf0\x15\xd7\x86F\x9a\xf3^\xc6\xe2\x9e\x88\x99')
'PRIV:WM/WMCollectionID:¸1&ð\x15×\x86F\x9aó^Æâ\x9e\x88\x99'  PRIV(owner='WM/WMCollectionID', data=b'\xb81&\xf0\x15\xd7\x86F\x9a\xf3^\xc6\xe2\x9e\x88\x99')
'PRIV:WM/WMContentID:\x8cF\x12t?_DK½@\xa0\x919F\x12q'  PRIV(owner='WM/WMContentID', data=b'\x8cF\x12t?_DK\xbd@\xa0\x919F\x12q')
'TALB' (Album/Movie/Show title)                     'Whistle a Happy Tune!'
'TBPM' (BPM (beats per minute))                     '96.0'
'TCOM' (Composer)                                   'Oscar Hammerstein II/Richard Rodgers'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '2010'
'TENC' (Encoded by)                                 'Basic Hip Digital Oddio'
'TIT2' (Title/songname/content description)         'I Whistle a Happy Tune'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'Fred Lowery'
'TPE2' (Band/orchestra/accompaniment)               'Fred Lowery'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Decca'
'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:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['all', 'novelty', 'pop', 'whistling', 'standards']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'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'                        '+1.88 dB'
'TXXX:replaygain_track_peak'                        '0.619482'

========================== row from database ==========================
                                              'id'  648633
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/music for maniacs/Fred Lowery - whistle a happy tune.mp3
                                         'working'  None
                                         'bitrate'  32
                                    'duration_sec'  150
                                           'genre'  prerock-unsorted
                                        'filesize'  603758
                                           'mtime'  1621698461
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm music for maniacs whistle happy tune prerock unsorted
                                      'tag_artist'  Fred Lowery
                                     'tag_release'  Whistle a Happy Tune!
                                       'tag_title'  I Whistle a Happy Tune
                                             'bpm'  96.0
                                    'search_title'  'a':3 'happy':4 'i':1 'tune':5 'whistle':2
                                   'search_artist'  'fred':1 'lowery':2
                                  'search_release'  'a':2 'happy':3 'tune':4 'whistle':1
                                     'search_rest'  'for':2 'happy':5 'maniacs':3 'music':1 'prerock':7 'tune':6 'unsorted':8 'whistle':4
                                    'search_combo'  'a':3A,9C 'for':13 'fred':6B 'happy':4A,10C,16 'i':1A 'lowery':7B 'maniacs':14 'music':12 'prerock':18 'tune':5A,11C,17 'unsorted':19 'whistle':2A,8C,15
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  4B
                                           '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-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['all', 'novelty', 'pop', 'whistling', 'standards']
                                        'tag_date'  2010
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1621698460.900294  (2021-05-22 17:47:40)
                             'size'  603758