======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '286'
                                          'artist'  "Danser's Inferno"
                                     'text_people'  ''
                                         'release'  'Easy Instr 70s'
                                           'title'  "badinage (funk '75)"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['funk', 'jazz-funk', 'gotta check it out']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '118.7'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Easy Instr 70s'
'TBPM' (BPM (beats per minute))                     '118.7'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         "badinage (funk '75)"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               "Danser's Inferno"
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['funk', 'jazz-funk', 'gotta check it out']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.19 dB'
'TXXX:replaygain_track_peak'                        '0.448092'

========================== row from database ==========================
                                              'id'  1532317
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/EASY Instr 70_s/Danser_s Inferno - badinage (funk _75).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  286
                                           'genre'  funk or soul
                                        'filesize'  11480346
                                           'mtime'  1628357810
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing soul EASY 70_s Danser_s _75) or soul
                                      'tag_artist'  Danser's Inferno
                                     'tag_release'  Easy Instr 70s
                                       'tag_title'  badinage (funk '75)
                                             'bpm'  118.7
                                    'search_title'  '75':4,5 'badinage':1 'funk':2,3
                                   'search_artist'  'danser':1 'dansers':3 'inferno':4 's':2
                                  'search_release'  '70s':3 'easy':1 'instr':2
                                     'search_rest'  '70':4 '75':8,9 'danser':6 'easy':3 'or':10 's':5,7 'soul':2 'swing':1
                                    'search_combo'  '70':16 '70s':12C '75':4A,5A,20,21 'badinage':1A 'danser':6B,18 'dansers':8B 'easy':10C,15 'funk':2A,3A 'inferno':9B 'instr':11C 'or':22 's':7B,17,19 'soul':14 'swing':13
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['funk', 'jazz-funk', 'gotta check it out']
                                        'tag_date'  1975
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1628357810.4911942  (2021-08-07 19:36:50)
                             'size'  11480346