======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '217'
                                          'artist'  'Sorcery'
                                     'text_people'  ''
                                         'release'  'Live'
                                           'title'  "I'm Back"
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-HHRNBTT-1', 'Q-SYN-2', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-1', "
 "'Q-CHART-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  ("['swedish', 'hard rock', 'death metal', 'old school death metal', 'sweden', "
 "'swedish death metal']")
                                     'discogstags'  "['death metal', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '99.7'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'MCDI' (Music CD identifier)                        MCDI(data=b'C\x00+\x009\x006\x00+\x003\x00E\x003\x007\x00+\x006\x00E\x007\x003\x00+\x00A\x007\x009\x004\x00+\x00E\x00E\x00C\x006\x00+\x001\x001\x009\x00C\x004\x00+\x001\x004\x00C\x00C\x00B\x00+\x001\x008\x00A\x00E\x00C\x00+\x001\x00D\x009\x002\x005\x00+\x002\x000\x006\x007\x009\x00+\x002\x004\x006\x002\x001\x00+\x002\x008\x00D\x009\x00A\x00+\x002\x00C\x00F\x007\x008\x00\x00\x00')
'PRIV:AverageLevel:{\n\x00\x00'                     PRIV(owner='AverageLevel', data=b'{\n\x00\x00')
'PRIV:PeakValue:¡q\x00\x00'                         PRIV(owner='PeakValue', data=b'\xa1q\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/UniqueFileIdentifier:;\x00\x00\x00'        PRIV(owner='WM/UniqueFileIdentifier', data=b';\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     'Live'
'TBPM' (BPM (beats per minute))                     '99.7'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDRC' (Recording time)                             '1980'
'TIT2' (Title/songname/content description)         "I'm Back"
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '217280'
'TPE1' (Lead performer(s)/Soloist(s))               'Sorcery'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '1'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['death metal', 'rock']
'TXXX:lastfmtags'                                   ['swedish',
 'hard rock',
 'death metal',
 'old school death metal',
 'sweden',
 'swedish death metal']
'TXXX:q-bass'                                       '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-2.78 dB'
'TXXX:replaygain_track_peak'                        '0.884688'

========================== row from database ==========================
                                              'id'  1507217
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/1980 David Glen Eisley & Sorcery - Live (2002 Reissue)/10 I_m Back.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  217
                                           'genre'  rock-cppex
                                        'filesize'  8687300
                                           'mtime'  1621508840
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy 1980 David Glen Eisley & (2002 Reissue) 10 I_m rock cppex
                                      'tag_artist'  Sorcery
                                     'tag_release'  Live
                                       'tag_title'  I'm Back
                                             'bpm'  99.7
                                    'search_title'  'back':4 'i':1 'im':3 'm':2
                                   'search_artist'  'sorcery':1
                                  'search_release'  'live':1
                                     'search_rest'  '1980':2 '2002':6,7 'classicprogpsy':1 'cppex':13 'david':3 'eisley':5 'glen':4 'i':10 'm':11 'reissue':8,9 'rock':12
                                    'search_combo'  '1980':8 '2002':12,13 'back':4A 'classicprogpsy':7 'cppex':19 'david':9 'eisley':11 'glen':10 'i':1A,16 'im':3A 'live':6C 'm':2A,17 'reissue':14,15 'rock':18 'sorcery':5B
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-1', 'q-drums-3', 'Q-SYN-2', 'q-other-3', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-1']
                                      'lastfmtags'  ['swedish', 'hard rock', 'death metal', 'old school death metal', 'sweden', 'swedish death metal']
                                        'tag_date'  1980
                                     'discogstags'  ['death metal', 'rock']

============================== file details ==============================
                                           'mtime'  1621508839.934036  (2021-05-20 13:07:19)
                             'size'  8687300