======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '212'
                                          'artist'  'Jennifer Lopez'
                                     'text_people'  ''
                                         'release'  'J Lo'
                                           'title'  'Play'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-2', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-4', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'rnb', 'latin', 'female vocalists', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism;set-pl-billboard'
                                             'bpm'  '104.768'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'J Lo'
'TBPM' (BPM (beats per minute))                     '104.768'
'TCON' (Content type, a.k.a. Genre)                 ['hip hop or rnb or rap or turntablism', 'set-pl-billboard']
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Play'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Jennifer Lopez'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['dance', 'rnb', 'latin', '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'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.36 dB'
'TXXX:replaygain_track_peak'                        '0.466961'

========================== row from database ==========================
                                              'id'  1404232
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/Jennifer Lopez - Play.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  212
                                           'genre'  hip hop or rnb or rap or turntablism;set-pl-billboard
                                        'filesize'  5107425
                                           'mtime'  1620532822
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat hip hop or rnb or rap or turntablism;set pl billboard
                                      'tag_artist'  Jennifer Lopez
                                     'tag_release'  J Lo
                                       'tag_title'  Play
                                             'bpm'  104.768
                                    'search_title'  'play':1
                                   'search_artist'  'jennifer':1 'lopez':2
                                  'search_release'  'j':1 'lo':2
                                     'search_rest'  '00poprockelectronic':1 'billboard':15 'dance':3 'generic':2 'hip':5 'hop':6 'or':7 'pl':14 'rap':9 'rnb':8 'set':11,13 'trapbeat':4 'turntablism':10,12
                                    'search_combo'  '00poprockelectronic':6 'billboard':20 'dance':8 'generic':7 'hip':10 'hop':11 'j':4C 'jennifer':2B 'lo':5C 'lopez':3B 'or':12 'pl':19 'play':1A 'rap':14 'rnb':13 'set':16,18 'trapbeat':9 'turntablism':15,17
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-2', '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-1', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'rnb', 'latin', 'female vocalists', 'pop']
                                        'tag_date'  2001
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620532821.541019  (2021-05-09 06:00:21)
                             'size'  5107425