======================== unified (from filesystem) ========================
                                         'bitrate'  '166.242'
                                        'duration'  '161'
                                          'artist'  'Otis Redding'
                                     'text_people'  ''
                                         'release'  'The Very Best Of Otis Redding'
                                           'title'  'Mr. Pitiful'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-UNU-1', 'Q-JZFKS-3', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', 'blues', 'rhythm and blues', 'soul', '60s']"
                                     'discogstags'  "['funk / soul', 'soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '16'
                                            'date'  '1964'
                                        'comments'  ''
                                           'genre'  'funk or soul-soul'
                                             'bpm'  '124.087'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'COMM:CDDB Disc ID:XXX'                             'C50A7110'
'COMM:ID3v1 Comment:XXX'                            'C50A7110'
'TALB' (Album/Movie/Show title)                     'The Very Best Of Otis Redding'
'TBPM' (BPM (beats per minute))                     '124.087'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul-soul'
'TDRC' (Recording time)                             '1964'
'TIT2' (Title/songname/content description)         'Mr. Pitiful'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Otis Redding'
'TRCK' (Track number/Position in set)               '4/16'
'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'                                    '2'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['funk / soul', 'soul']
'TXXX:lastfmtags'                                   ['oldies', 'blues', 'rhythm and blues', 'soul', '60s']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'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'                        '+0.06 dB'
'TXXX:replaygain_track_peak'                        '0.699062'

========================== row from database ==========================
                                              'id'  1381705
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/Redding, Otis/The Very Best Of Otis Redding/Otis Redding - Mr. Pitiful - 04.mp3
                                         'working'  None
                                         'bitrate'  166
                                    'duration_sec'  161
                                           'genre'  funk or soul-soul
                                        'filesize'  3354496
                                           'mtime'  1620592781
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul Redding, 04 funk or soul soul
                                      'tag_artist'  Otis Redding
                                     'tag_release'  The Very Best Of Otis Redding
                                       'tag_title'  Mr. Pitiful
                                             'bpm'  124.087
                                    'search_title'  'mr':1,2 'pitiful':3
                                   'search_artist'  'otis':1 'redding':2
                                  'search_release'  'best':3 'of':4 'otis':5 'redding':6 'the':1 'very':2
                                     'search_rest'  'funk':2 'or':6 'redding':4,5 'soul':3 'swing':1
                                    'search_combo'  'best':8C 'funk':13 'mr':1A,2A 'of':9C 'or':17 'otis':4B,10C 'pitiful':3A 'redding':5B,11C,15,16 'soul':14 'swing':12 'the':6C 'very':7C
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['oldies', 'blues', 'rhythm and blues', 'soul', '60s']
                                        'tag_date'  1964
                                     'discogstags'  ['funk / soul', 'soul']

============================== file details ==============================
                                           'mtime'  1620592781.1260638  (2021-05-09 22:39:41)
                             'size'  3354496