======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '234'
                                          'artist'  'Daniel Powter'
                                     'text_people'  ''
                                         'release'  'DP'
                                           'title'  'Bad Day'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'Q-PLAY-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-4', 'q-drums-2', 'q-other-3', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['canadian', 'pop', 'rock', 'alternative', 'piano', 'singer songwriter']"
                                     'discogstags'  "['pop', 'pop rock', 'soft rock', 'acoustic', 'ballad']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '139.6'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

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'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:Z\x00A\x00C\x00R\x00 \x00D\x00B\x00S\x00\x00\x00'  PRIV(owner='WM/Provider', data=b'Z\x00A\x00C\x00R\x00 \x00D\x00B\x00S\x00\x00\x00')
'PRIV:WM/UniqueFileIdentifier:;\x00\x00\x00'        PRIV(owner='WM/UniqueFileIdentifier', data=b';\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:1\x14í`Wz%Bº\nV-ìu\x8b»'  PRIV(owner='WM/WMCollectionGroupID', data=b'1\x14\xed`Wz%B\xba\nV-\xecu\x8b\xbb')
'PRIV:WM/WMCollectionID:1\x14í`Wz%Bº\nV-ìu\x8b»'    PRIV(owner='WM/WMCollectionID', data=b'1\x14\xed`Wz%B\xba\nV-\xecu\x8b\xbb')
'PRIV:WM/WMContentID:\x10¥\x9c\x93º\x9e\x17O\x8b: s\x91\x84ûQ'  PRIV(owner='WM/WMContentID', data=b'\x10\xa5\x9c\x93\xba\x9e\x17O\x8b: s\x91\x84\xfbQ')
'TALB' (Album/Movie/Show title)                     'DP'
'TBPM' (BPM (beats per minute))                     '139.6'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Bad Day'
'TKEY' (Initial key)                                '5B'
'TLEN' (Length)                                     '234475'
'TPE1' (Lead performer(s)/Soloist(s))               'daniel powter'
'TPE2' (Band/orchestra/accompaniment)               'Daniel Powter'
'TPUB' (Publisher)                                  'Warner Bros.'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['pop', 'pop rock', 'soft rock', 'acoustic', 'ballad']
'TXXX:lastfmtags'                                   ['canadian', 'pop', 'rock', 'alternative', 'piano', 'singer songwriter']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.45 dB'
'TXXX:replaygain_track_peak'                        '0.421751'

========================== row from database ==========================
                                              'id'  1385770
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/03 Bad Day.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  234
                                           'genre'  ifs-songwriter
                                        'filesize'  3753650
                                           'mtime'  1637330767
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 03 ifs songwriter
                                      'tag_artist'  Daniel Powter
                                     'tag_release'  DP
                                       'tag_title'  Bad Day
                                             'bpm'  139.6
                                    'search_title'  'bad':1 'day':2
                                   'search_artist'  'daniel':1 'powter':2
                                  'search_release'  'dp':1
                                     'search_rest'  '00poprockelectronic':1 'files':5,6 'ifs':7 'loose':3,4 'songwriter':8 'unsorted':2
                                    'search_combo'  '00poprockelectronic':6 'bad':1A 'daniel':3B 'day':2A 'dp':5C 'files':10,11 'ifs':12 'loose':8,9 'powter':4B 'songwriter':13 'unsorted':7
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['canadian', 'pop', 'rock', 'alternative', 'piano', 'singer songwriter']
                                        'tag_date'  2005
                                     'discogstags'  ['pop', 'pop rock', 'soft rock', 'acoustic', 'ballad']

============================== file details ==============================
                                           'mtime'  1637330767.237118  (2021-11-19 15:06:07)
                             'size'  3753650