======================== unified (from filesystem) ========================
                                         'bitrate'  '182.259'
                                        'duration'  '260'
                                          'artist'  'Krs One'
                                     'text_people'  ''
                                         'release'  'Return of the Boombap'
                                           'title'  'Sound of Da Police'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'q-syn-3', 'q-bass-3', 'q-busy-3', "
 "'q-grit-2', 'q-play-2', 'Q-OLDST-3', 'q-chart-2', 'q-drums-4', 'q-other-1', "
 "'q-piano-1', 'q-vocals-3', 'Q-HHRNBTT-3', 'q-mixbeat-3', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['hip-hop', 'rap', 'hip hop', 'underground hip-hop', 'old school']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '94.946'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Return of the Boombap'
'TBPM' (BPM (beats per minute))                     '94.946'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDRC' (Recording time)                             '1993'
'TIT2' (Title/songname/content description)         'Sound of Da Police'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Krs One'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['hip-hop', 'rap', 'hip hop', 'underground hip-hop', 'old school']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.60 dB'
'TXXX:replaygain_track_peak'                        '0.485783'

========================== row from database ==========================
                                              'id'  1407818
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/KRS One - Sound of Da Police.mp3
                                         'working'  None
                                         'bitrate'  182
                                    'duration_sec'  260
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  5937369
                                           'mtime'  1620558722
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat KRS hip hop or rnb or rap or turntablism
                                      'tag_artist'  Krs One
                                     'tag_release'  Return of the Boombap
                                       'tag_title'  Sound of Da Police
                                             'bpm'  94.946
                                    'search_title'  'da':3 'of':2 'police':4 'sound':1
                                   'search_artist'  'krs':1 'one':2
                                  'search_release'  'boombap':4 'of':2 'return':1 'the':3
                                     'search_rest'  '00poprockelectronic':1 'dance':3 'generic':2 'hip':6 'hop':7 'krs':5 'or':8 'rap':10 'rnb':9 'trapbeat':4 'turntablism':11
                                    'search_combo'  '00poprockelectronic':11 'boombap':10C 'da':3A 'dance':13 'generic':12 'hip':16 'hop':17 'krs':5B,15 'of':2A,8C 'one':6B 'or':18 'police':4A 'rap':20 'return':7C 'rnb':19 'sound':1A 'the':9C 'trapbeat':14 'turntablism':21
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-3', '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-2', 'q-other-1', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['hip-hop', 'rap', 'hip hop', 'underground hip-hop', 'old school']
                                        'tag_date'  1993
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620558722.3207402  (2021-05-09 13:12:02)
                             'size'  5937369