======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '169'
                                          'artist'  'Elvis Presley'
                                     'text_people'  ''
                                         'release'  "Elvis' Worldwide 50 Gold Award Hits, Vol. 1, Part 1 & Part 2 Disc 1"
                                           'title'  'Playing For Keeps'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock and roll', 'rock n roll', 'rock', 'oldies', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '172'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rocknroll'
                                             'bpm'  '139.562'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

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'PRIV:PeakValue:)Y\x00\x00'                         PRIV(owner='PeakValue', data=b')Y\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 \x001\x005\x006\x008\x000\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x005\x001\x007\x005\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x002\x005\x009\x007\x001\x006\x006\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x00 \x001\x005\x006\x008\x000\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x005\x001\x007\x005\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x002\x005\x009\x007\x001\x006\x006\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:Ì¦í°¥]«E¥ÁÊ\r\x92UIã'  PRIV(owner='WM/WMCollectionGroupID', data=b'\xcc\xa6\xed\xb0\xa5]\xabE\xa5\xc1\xca\r\x92UI\xe3')
'PRIV:WM/WMCollectionID:Ì¦í°¥]«E¥ÁÊ\r\x92UIã'       PRIV(owner='WM/WMCollectionID', data=b'\xcc\xa6\xed\xb0\xa5]\xabE\xa5\xc1\xca\r\x92UI\xe3')
'PRIV:WM/WMContentID:×u\x10\x14\x95\x0fàE\x94d\x8cEÅ$\x0bT'  PRIV(owner='WM/WMContentID', data=b'\xd7u\x10\x14\x95\x0f\xe0E\x94d\x8cE\xc5$\x0bT')
'TALB' (Album/Movie/Show title)                     "Elvis' Worldwide 50 Gold Award Hits, Vol. 1, Part 1 & Part 2 Disc 1"
'TBPM' (BPM (beats per minute))                     '139.562'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rocknroll'
'TDRC' (Recording time)                             '1957'
'TIT2' (Title/songname/content description)         'Playing For Keeps'
'TKEY' (Initial key)                                '8B'
'TLEN' (Length)                                     '169840'
'TPE1' (Lead performer(s)/Soloist(s))               'Elvis Presley'
'TPUB' (Publisher)                                  'RCA'
'TRCK' (Track number/Position in set)               '172'
'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'                                   ['rock and roll', 'rock n roll', 'rock', 'oldies', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'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'                        '-0.15 dB'
'TXXX:replaygain_track_peak'                        '0.696127'

========================== row from database ==========================
                                              'id'  1447518
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1957/1957-172 - Elvis Presley - Playing For Keeps.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  169
                                           'genre'  rock-pop-early-rocknroll
                                        'filesize'  6794913
                                           'mtime'  1622659472
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1957 1957 172 rock pop early rocknroll
                                      'tag_artist'  Elvis Presley
                                     'tag_release'  Elvis' Worldwide 50 Gold Award Hits, Vol. 1, Part 1 & Part 2 Disc 1
                                       'tag_title'  Playing For Keeps
                                             'bpm'  139.562
                                    'search_title'  'for':2 'keeps':3 'playing':1
                                   'search_artist'  'elvis':1 'presley':2
                                  'search_release'  '1':11,12 '2':14 '50':4 'award':6 'disc':15 'elvis':1,2 'gold':5 'hits':7,8 'part':13 'vol':9,10 'worldwide':3
                                     'search_rest'  '00oldiepop':5 '172':7 '1957':6 'country':4 'early':10 'exotica':2 'jazz':1 'oldies':3 'pop':9 'rock':8 'rocknroll':11
                                    'search_combo'  '00oldiepop':25 '1':16C,17C '172':27 '1957':26 '2':19C '50':9C 'award':11C 'country':24 'disc':20C 'early':30 'elvis':4B,6C,7C 'exotica':22 'for':2A 'gold':10C 'hits':12C,13C 'jazz':21 'keeps':3A 'oldies':23 'part':18C 'playing':1A 'pop':29 'presley':5B 'rock':28 'rocknroll':31 'vol':14C,15C 'worldwide':8C
                                    'tag_tracknum'  172
                                      'num_images'  0
                                             'key'  8B
                                           '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-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rock and roll', 'rock n roll', 'rock', 'oldies', 'classic rock']
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622659471.8384738  (2021-06-02 20:44:31)
                             'size'  6794913