======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '619'
                                          'artist'  'Deep Purple'
                                     'text_people'  ''
                                         'release'  'top100'
                                           'title'  'Child in time'
                                           'quals'  ("['Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['heavy metal', 'rock', 'hard rock', 'progressive rock', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance;eid-metal;rock-cppex'
                                             'bpm'  '128.251'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'top100'
'TBPM' (BPM (beats per minute))                     '128.251'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-dance', 'eid-metal', 'rock-cppex']
'TIT2' (Title/songname/content description)         'Child in time'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Deep Purple'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '078,185'
'TXXX:Mp3gain_undo'                                 '+001,+001,N'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:Tracknum'                                     '003'
'TXXX:lastfmtags'                                   ['heavy metal', 'rock', 'hard rock', 'progressive rock', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.10 dB'
'TXXX:replaygain_track_peak'                        '0.547109'

========================== row from database ==========================
                                              'id'  1405926
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/top100/003-Deep_Purple-Child_in_time.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  619
                                           'genre'  electronic-generic or radio-dance;eid-metal;rock-cppex
                                        'filesize'  9911457
                                           'mtime'  1620736939
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat 003 Deep_Purple Child_in_time electronic generic or radio dance;eid metal;rock cppex
                                      'tag_artist'  Deep Purple
                                     'tag_release'  top100
                                       'tag_title'  Child in time
                                             'bpm'  128.251
                                    'search_title'  'child':1 'in':2 'time':3
                                   'search_artist'  'deep':1 'purple':2
                                  'search_release'  'top100':1
                                     'search_rest'  '00poprockelectronic':1 'child':7 'cppex':21 'dance':3,13,15 'deep':5 'eid':14,16 'electronic':10 'generic':2 'in':8 'metal':17,19 'or':11 'purple':6 'radio':12 'rock':18,20 'time':9 'trapbeat':4
                                    'search_combo'  '00poprockelectronic':7 'child':1A,13 'cppex':27 'dance':9,19,21 'deep':4B,11 'eid':20,22 'electronic':16 'generic':8 'in':2A,14 'metal':23,25 'or':17 'purple':5B,12 'radio':18 'rock':24,26 'time':3A,15 'top100':6C 'trapbeat':10
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           '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-2', 'q-syn-3', 'q-chart-3', 'q-other-4', 'Q-HAP-1', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['heavy metal', 'rock', 'hard rock', 'progressive rock', 'classic rock']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736938.5948212  (2021-05-11 14:42:18)
                             'size'  9911457