======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '203'
                                          'artist'  'Slipknot'
                                     'text_people'  ''
                                         'release'  'Slipknot'
                                           'title'  'Diluted'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-4', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-4', 'q-play-2', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock', 'metal', 'nu metal', 'heavy metal']"
                                     'discogstags'  "['rock', 'nu metal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'eid-metal-nu'
                                             'bpm'  '106.085'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

"PRIV:AverageLevel:P'\x00\x00"                      PRIV(owner='AverageLevel', data=b"P'\x00\x00")
'PRIV:PeakValue:ΓΏ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'Slipknot'
'TBPM' (BPM (beats per minute))                     '106.085'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-nu'
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         'Diluted'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Slipknot'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '4'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['rock', 'nu metal']
'TXXX:lastfmtags'                                   ['rock', 'metal', 'nu metal', 'heavy metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.67 dB'
'TXXX:replaygain_track_peak'                        '0.456890'

========================== row from database ==========================
                                              'id'  1331793
                                            'path'  /data/Music/Bulk/00poprockelectronic/Slipknot/Slipknot/Slipknot - Diluted.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  203
                                           'genre'  eid-metal-nu
                                        'filesize'  3252885
                                           'mtime'  1620311142
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic eid metal nu
                                      'tag_artist'  Slipknot
                                     'tag_release'  Slipknot
                                       'tag_title'  Diluted
                                             'bpm'  106.085
                                    'search_title'  'diluted':1
                                   'search_artist'  'slipknot':1
                                  'search_release'  'slipknot':1
                                     'search_rest'  '00poprockelectronic':1 'eid':2 'metal':3 'nu':4
                                    'search_combo'  '00poprockelectronic':4 'diluted':1A 'eid':5 'metal':6 'nu':7 'slipknot':2B,3C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-4', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['rock', 'metal', 'nu metal', 'heavy metal']
                                        'tag_date'  1999
                                     'discogstags'  ['rock', 'nu metal']

============================== file details ==============================
                                           'mtime'  1620311142.4324741  (2021-05-06 16:25:42)
                             'size'  3252885