======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '312'
                                          'artist'  "Ian O'Brien"
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Mad Mike Disease'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['techno', 'electronic', 'house', 'ambient', 'metro downtempo']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-newer-dark or acid'
                                             'bpm'  '126.885'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:"\x14\x00\x00'                   PRIV(owner='AverageLevel', data=b'"\x14\x00\x00')
'PRIV:PeakValue:µp\x00\x00'                         PRIV(owner='PeakValue', data=b'\xb5p\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')
'TBPM' (BPM (beats per minute))                     '126.885'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-newer-dark or acid'
'TIT2' (Title/songname/content description)         'Mad Mike Disease'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               "Ian O'Brien"
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['techno', 'electronic', 'house', 'ambient', 'metro downtempo']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.54 dB'
'TXXX:replaygain_track_peak'                        '0.622639'

========================== row from database ==========================
                                              'id'  1518211
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Electro Jazz/Ian O_Brien - Mad Mike Disease.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  312
                                           'genre'  prerock-jb-jazz-newer-dark or acid
                                        'filesize'  4999875
                                           'mtime'  1620528642
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Electro Jazz O_Brien prerock jb jazz newer dark or acid
                                      'tag_artist'  Ian O'Brien
                                     'tag_release'  None
                                       'tag_title'  Mad Mike Disease
                                             'bpm'  126.885
                                    'search_title'  'disease':3 'mad':1 'mike':2
                                   'search_artist'  'brien':3 'ian':1 'o':2 'obrien':4
                                  'search_release'  
                                     'search_rest'  'acid':13 'brien':7 'country':4 'dark':11 'electro':5 'exotica':2 'jazz':1 'jb':9 'newer':10 'o':6 'oldies':3 'or':12 'prerock':8
                                    'search_combo'  'acid':20 'brien':6B,14 'country':11 'dark':18 'disease':3A 'electro':12 'exotica':9 'ian':4B 'jazz':8 'jb':16 'mad':1A 'mike':2A 'newer':17 'o':5B,13 'obrien':7B 'oldies':10 'or':19 'prerock':15
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['techno', 'electronic', 'house', 'ambient', 'metro downtempo']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528641.691388  (2021-05-09 04:50:41)
                             'size'  4999875