======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '233'
                                          'artist'  'Kylie Minogue'
                                     'text_people'  ''
                                         'release'  'Ultimate Kylie (disc 1)'
                                           'title'  'Hand on Your Heart'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'Q-UNU-1', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'electronic', 'australian', 'female vocalists', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '120.256'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Ultimate Kylie (disc 1)'
'TBPM' (BPM (beats per minute))                     '120.256'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Hand on Your Heart'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Kylie Minogue'
'TRCK' (Track number/Position in set)               '8'
'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:lastfmtags'                                   ['dance', 'electronic', 'australian', 'female vocalists', 'pop']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.65 dB'
'TXXX:replaygain_track_peak'                        '0.500267'

========================== row from database ==========================
                                              'id'  1283751
                                            'path'  /data/Music/Bulk/00poprockelectronic/album top 1000/0252 Kylie Minogue - Ultimate Kylie/Ultimate Kylie Disc 1/Ultimate Kylie (disc 1)-08-Hand on Your Heart.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  233
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  5606752
                                           'mtime'  1621696856
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic album top 1000 0252 Disc 08 electronic generic or radio dance
                                      'tag_artist'  Kylie Minogue
                                     'tag_release'  Ultimate Kylie (disc 1)
                                       'tag_title'  Hand on Your Heart
                                             'bpm'  120.256
                                    'search_title'  'hand':1 'heart':4 'on':2 'your':3
                                   'search_artist'  'kylie':1 'minogue':2
                                  'search_release'  '1':5,6 'disc':3,4 'kylie':2 'ultimate':1
                                     'search_rest'  '00poprockelectronic':1 '0252':5 '1000':4 'album':2 'dance':11 'disc':6 'electronic':7 'generic':8 'or':9 'radio':10 'top':3
                                    'search_combo'  '00poprockelectronic':13 '0252':17 '1':11C,12C '1000':16 'album':14 'dance':23 'disc':9C,10C,18 'electronic':19 'generic':20 'hand':1A 'heart':4A 'kylie':5B,8C 'minogue':6B 'on':2A 'or':21 'radio':22 'top':15 'ultimate':7C 'your':3A
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'electronic', 'australian', 'female vocalists', 'pop']
                                        'tag_date'  2005
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696856.2327383  (2021-05-22 17:20:56)
                             'size'  5606752