======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '355'
                                          'artist'  "Guns n' Roses"
                                     'text_people'  ''
                                         'release'  'top100'
                                           'title'  'Sweet child of mine'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['classic rock', '80s', 'hard rock', 'metal', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '124.929'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'top100'
'TBPM' (BPM (beats per minute))                     '124.929'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Sweet child of mine'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               "Guns n' Roses"
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '070,184'
'TXXX:Mp3gain_undo'                                 '+005,+005,N'
'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:Tracknum'                                     '021'
'TXXX:lastfmtags'                                   ['classic rock', '80s', 'hard rock', 'metal', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.20 dB'
'TXXX:replaygain_track_peak'                        '0.486261'

========================== row from database ==========================
                                              'id'  1514113
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/top100/021-Guns_n__Roses-Sweet_child_of_mine.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  355
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  5684234
                                           'mtime'  1621854165
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat 021 Guns_n__Roses Sweet_child_of_mine electronic generic or radio dance
                                      'tag_artist'  Guns n' Roses
                                     'tag_release'  top100
                                       'tag_title'  Sweet child of mine
                                             'bpm'  124.929
                                    'search_title'  'child':2 'mine':4 'of':3 'sweet':1
                                   'search_artist'  'guns':1 'n':2,3 'roses':4
                                  'search_release'  'top100':1
                                     'search_rest'  '00poprockelectronic':1 'child':9 'dance':3 'electronic':12 'generic':2 'guns':5 'mine':11 'n':6 'of':10 'or':13 'radio':14 'roses':7 'sweet':8 'trapbeat':4
                                    'search_combo'  '00poprockelectronic':10 'child':2A,18 'dance':12 'electronic':21 'generic':11 'guns':5B,14 'mine':4A,20 'n':6B,7B,15 'of':3A,19 'or':22 'radio':23 'roses':8B,16 'sweet':1A,17 'top100':9C 'trapbeat':13
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2A
                                           '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-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', '80s', 'hard rock', 'metal', 'rock']
                                        'tag_date'  1985
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621854165.079459  (2021-05-24 13:02:45)
                             'size'  5684234