======================== unified (from filesystem) ========================
                                         'bitrate'  '178.949'
                                        'duration'  '290'
                                          'artist'  'The Average White Band'
                                     'text_people'  ''
                                         'release'  'The Best Of'
                                           'title'  'The Jugglers'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', 'Q-JZFKS-4', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['funk', 'soul', '70s', 'rock', 'jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  '16'
                                            'date'  '1994'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk'
                                             'bpm'  '143.011'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM:CDDB Disc ID:XXX'                             'C710B310'
'COMM:ID3v1 Comment:XXX'                            'C710B310'
'TALB' (Album/Movie/Show title)                     'The Best Of'
'TBPM' (BPM (beats per minute))                     '143.011'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul-funk'
'TDRC' (Recording time)                             '1994'
'TIT2' (Title/songname/content description)         'The Jugglers'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Average White Band'
'TRCK' (Track number/Position in set)               '11/16'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.80, LAME dll 3.89, VBR 3, Stereo, High quality'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '4'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['funk', 'soul', '70s', 'rock', 'jazz']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.35 dB'
'TXXX:replaygain_track_peak'                        '0.429413'

========================== row from database ==========================
                                              'id'  1485276
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/Average White Band/Average White Band, the/The Best Of/The Average White Band - The Jugglers - 11.mp3
                                         'working'  None
                                         'bitrate'  178
                                    'duration_sec'  290
                                           'genre'  funk or soul-funk
                                        'filesize'  6495455
                                           'mtime'  1620665583
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul Band, the 11 funk or soul funk
                                      'tag_artist'  The Average White Band
                                     'tag_release'  The Best Of
                                       'tag_title'  The Jugglers
                                             'bpm'  143.011
                                    'search_title'  'jugglers':2 'the':1
                                   'search_artist'  'average':2 'band':4 'the':1 'white':3
                                  'search_release'  'best':2 'of':3 'the':1
                                     'search_rest'  'band':4,5 'funk':2 'or':7 'soul':3 'swing':1 'the':6
                                    'search_combo'  'average':4B 'band':6B,13,14 'best':8C 'funk':11 'jugglers':2A 'of':9C 'or':16 'soul':12 'swing':10 'the':1A,3B,7C,15 'white':5B
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-4', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['funk', 'soul', '70s', 'rock', 'jazz']
                                        'tag_date'  1994
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620665582.9826953  (2021-05-10 18:53:02)
                             'size'  6495455