======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '389'
                                          'artist'  'Madonna'
                                     'text_people'  ''
                                         'release'  'Music'
                                           'title'  'Paradise (Not For me)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', '80s', 'female vocalists', 'pop', 'electronic']"
                                     'discogstags'  ("['electronic', 'rock', 'pop', 'synth-pop', 'electro', 'downtempo', 'pop "
 "rock', 'acoustic']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '143.213'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Music'
'TBPM' (BPM (beats per minute))                     '143.213'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Paradise (Not For me)'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Madonna'
'TRCK' (Track number/Position in set)               '9'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic',
 'rock',
 'pop',
 'synth-pop',
 'electro',
 'downtempo',
 'pop rock',
 'acoustic']
'TXXX:lastfmtags'                                   ['dance', '80s', 'female vocalists', 'pop', 'electronic']
'TXXX:original release date'                        ['2000', '2000']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.50 dB'
'TXXX:replaygain_track_peak'                        '0.497836'

========================== row from database ==========================
                                              'id'  1294579
                                            'path'  /data/Music/Bulk/00poprockelectronic/Madonna/MBZ;#Madonna;#Music;#09;#Paradis (not for me).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  389
                                           'genre'  electronic-unsorted
                                        'filesize'  9340447
                                           'mtime'  1621696346
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic MBZ;#Madonna;#Music;#09;#Paradis (not for electronic unsorted
                                      'tag_artist'  Madonna
                                     'tag_release'  Music
                                       'tag_title'  Paradise (Not For me)
                                             'bpm'  143.213
                                    'search_title'  'for':4 'me':5,6 'not':2,3 'paradise':1
                                   'search_artist'  'madonna':1
                                  'search_release'  'music':1
                                     'search_rest'  '00poprockelectronic':1 '09':5,10 'electronic':15 'for':14 'madonna':3,8 'mbz':2,7 'music':4,9 'not':12,13 'paradis':6,11 'unsorted':16
                                    'search_combo'  '00poprockelectronic':9 '09':13,18 'electronic':23 'for':4A,22 'madonna':7B,11,16 'mbz':10,15 'me':5A,6A 'music':8C,12,17 'not':2A,3A,20,21 'paradis':14,19 'paradise':1A 'unsorted':24
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dance', '80s', 'female vocalists', 'pop', 'electronic']
                                        'tag_date'  2000
                                     'discogstags'  ['electronic', 'rock', 'pop', 'synth-pop', 'electro', 'downtempo', 'pop rock', 'acoustic']

============================== file details ==============================
                                           'mtime'  1621696346.0640366  (2021-05-22 17:12:26)
                             'size'  9340447