======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '206'
                                          'artist'  'Bad Cash Quartet'
                                     'text_people'  ''
                                         'release'  'Outcast'
                                           'title'  'Monday Morning'
                                           'quals'  ("['Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['swedish', 'indie pop', 'indie', 'pop']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'rock-pop'
                                             'bpm'  '122.585'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Outcast'
'TBPM' (BPM (beats per minute))                     '122.585'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop'
'TDOR' (Original release time)                      '2001'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Monday Morning'
'TKEY' (Initial key)                                '8B'
'TLEN' (Length)                                     '206550'
'TPE1' (Lead performer(s)/Soloist(s))               'Bad Cash Quartet'
'TPE2' (Band/orchestra/accompaniment)               'Bad Cash Quartet'
'TRCK' (Track number/Position in set)               '04'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['swedish', 'indie pop', 'indie', 'pop']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.37 dB'
'TXXX:replaygain_track_peak'                        '0.342334'

========================== row from database ==========================
                                              'id'  1351898
                                            'path'  /data/Music/Bulk/00poprockelectronic/swedish rock/Bad Cash Quartet - Monday Morning.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  206
                                           'genre'  rock-pop
                                        'filesize'  3309684
                                           'mtime'  1620392791
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic swedish rock rock pop
                                      'tag_artist'  Bad Cash Quartet
                                     'tag_release'  Outcast
                                       'tag_title'  Monday Morning
                                             'bpm'  122.585
                                    'search_title'  'monday':1 'morning':2
                                   'search_artist'  'bad':1 'cash':2 'quartet':3
                                  'search_release'  'outcast':1
                                     'search_rest'  '00poprockelectronic':1 'pop':4 'rock':3 'swedish':2
                                    'search_combo'  '00poprockelectronic':7 'bad':3B 'cash':4B 'monday':1A 'morning':2A 'outcast':6C 'pop':10 'quartet':5B 'rock':9 'swedish':8
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['swedish', 'indie pop', 'indie', 'pop']
                                        'tag_date'  2001
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620392790.799933  (2021-05-07 15:06:30)
                             'size'  3309684