======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '80'
                                          'artist'  'Aerial M'
                                     'text_people'  ''
                                         'release'  'Aerial M'
                                           'title'  'Rachmaninoff'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-3', 'Q-PLAY-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-1', 'q-other-4', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'lo fi', 'post rock', 'indie rock', '77davez all tracks']"
                                     'discogstags'  "['rock', 'post rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '7'
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'rock-post'
                                             'bpm'  '145.685'
                                             'key'  '5A'
                                        'acoustid'  'bb9b1fe8-57ff-412a-891c-efb53c32c7b3'
rest: ''

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

'MCDI' (Music CD identifier)                        MCDI(data=b'7\x00+\x009\x006\x00+\x005\x00D\x006\x00B\x00+\x00C\x008\x007\x00B\x00+\x001\x002\x002\x00D\x002\x00+\x001\x003\x00A\x006\x00A\x00+\x001\x008\x005\x000\x001\x00+\x001\x00E\x004\x003\x008\x00+\x002\x002\x00F\x000\x00B\x00\x00\x00')
'PRIV:AverageLevel:{\x04\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x04\x00\x00')
'PRIV:PeakValue:¡4\x00\x00'                         PRIV(owner='PeakValue', data=b'\xa14\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 \x003\x001\x002\x004\x000\x001\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x002\x002\x004\x006\x008\x002\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x002\x002\x006\x001\x009\x007\x008\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x003\x001\x002\x004\x000\x001\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x002\x002\x004\x006\x008\x002\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x002\x002\x006\x001\x009\x007\x008\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:?ÕmÓ\x19\x071G¸\x17¨#¬E\x02\x1b'  PRIV(owner='WM/WMCollectionGroupID', data=b'?\xd5m\xd3\x19\x071G\xb8\x17\xa8#\xacE\x02\x1b')
'PRIV:WM/WMCollectionID:?ÕmÓ\x19\x071G¸\x17¨#¬E\x02\x1b'  PRIV(owner='WM/WMCollectionID', data=b'?\xd5m\xd3\x19\x071G\xb8\x17\xa8#\xacE\x02\x1b')
'PRIV:WM/WMContentID:\n\x07LVÁm\x95B«`\xa0ùÀ|ôÍ'    PRIV(owner='WM/WMContentID', data=b'\n\x07LV\xc1m\x95B\xab`\xa0\xf9\xc0|\xf4\xcd')
'TALB' (Album/Movie/Show title)                     'Aerial M'
'TBPM' (BPM (beats per minute))                     '145.685'
'TCON' (Content type, a.k.a. Genre)                 'rock-post'
'TDOR' (Original release time)                      '1997'
'TDRC' (Recording time)                             '1997-10-14'
'TIT2' (Title/songname/content description)         'Rachmaninoff'
'TKEY' (Initial key)                                '5A'
'TLEN' (Length)                                     '80533'
'TMED' (Media type)                                 '12" Vinyl'
'TPE1' (Lead performer(s)/Soloist(s))               'Aerial M'
'TPE2' (Band/orchestra/accompaniment)               'Aerial M'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Drag City'
'TRCK' (Track number/Position in set)               '4/7'
'TSO2'                                              'Aerial M'
'TSOP' (Performer sort order)                       'Aerial M'
'TXXX:Acoustid Id'                                  'bb9b1fe8-57ff-412a-891c-efb53c32c7b3'
'TXXX:BARCODE'                                      '781484011415'
'TXXX:CATALOGNUMBER'                                'DC114'
'TXXX:FIRST_PLAYED'                                 '2014-08-01 22:21:15'
'TXXX:MusicBrainz Album Artist Id'                  '7f8f02bb-e2d9-4ee1-b5a6-b35ea4bdcac0'
'TXXX:MusicBrainz Album Id'                         '3e827de0-e84d-3abd-93f3-931fa9d7317f'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '7f8f02bb-e2d9-4ee1-b5a6-b35ea4bdcac0'
'TXXX:PLAY_COUNTER'                                 '1'
'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:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['rock', 'post rock']
'TXXX:lastfmtags'                                   ['instrumental', 'lo fi', 'post rock', 'indie rock', '77davez all tracks']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.30 dB'
'TXXX:replaygain_track_peak'                        '0.975101'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'b1cf768e-a730-4053-a635-c53c4f24aeec')

========================== row from database ==========================
                                              'id'  1325709
                                            'path'  /data/Music/Bulk/00poprockelectronic/Aerial M - As Performed By.._/04 Rachmaninoff.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  80
                                           'genre'  rock-post
                                        'filesize'  3221960
                                           'mtime'  1621852552
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic As Performed By.._ 04 rock post
                                      'tag_artist'  Aerial M
                                     'tag_release'  Aerial M
                                       'tag_title'  Rachmaninoff
                                             'bpm'  145.685
                                    'search_title'  'rachmaninoff':1
                                   'search_artist'  'aerial':1 'm':2
                                  'search_release'  'aerial':1 'm':2
                                     'search_rest'  '00poprockelectronic':1 'as':2 'by':4,5 'performed':3 'post':7 'rock':6
                                    'search_combo'  '00poprockelectronic':6 'aerial':2B,4C 'as':7 'by':9,10 'm':3B,5C 'performed':8 'post':12 'rachmaninoff':1A 'rock':11
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['instrumental', 'lo fi', 'post rock', 'indie rock', '77davez all tracks']
                                        'tag_date'  1997
                                     'discogstags'  ['rock', 'post rock']

============================== file details ==============================
                                           'mtime'  1621852552.111378  (2021-05-24 12:35:52)
                             'size'  3221960