======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '236'
                                          'artist'  'Barry Tiffin'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Candy Bars For Elvis'
                                           'quals'  ("['Q-HAP-2', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                     'discogstags'  "['non-music', 'folk, world, & country', 'spoken word', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  '23'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-th-candy'
                                             'bpm'  '144.541'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '14'
'COMM:iTunNORM:eng'                                 (' 000002AB 000002DC 000095A6 00006F13 00000BF0 00029F53 000081B6 000081AB '
 '00002E6D 0002D414')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 000009C0 00000000009ECEB0 00000000 00565FD7 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_1:eng'                            '5212B817+359571+23+150+10983+24839+39728+51970+69500+82409+93856+104103+119971+132022+146277+164255+180366+198066+213887+230987+245523+257212+273773+287358+305377+322477'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '14'
'TBPM' (BPM (beats per minute))                     '144.541'
'TCON' (Content type, a.k.a. Genre)                 'set-th-candy'
'TENC' (Encoded by)                                 'iTunes 8.0.2'
'TIT2' (Title/songname/content description)         'Candy Bars For Elvis'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Barry Tiffin'
'TRCK' (Track number/Position in set)               '14/23'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['non-music', 'folk, world, & country', 'spoken word', 'pop']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.31 dB'
'TXXX:replaygain_track_peak'                        '0.611737'

========================== row from database ==========================
                                              'id'  735850
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/sweets/Barry Tiffin - Candy Bars For Elvis 1.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  236
                                           'genre'  set-th-candy
                                        'filesize'  5667775
                                           'mtime'  1678464216
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country sweets 1 set th candy
                                      'tag_artist'  Barry Tiffin
                                     'tag_release'  None
                                       'tag_title'  Candy Bars For Elvis
                                             'bpm'  144.541
                                    'search_title'  'bars':2 'candy':1 'elvis':4 'for':3
                                   'search_artist'  'barry':1 'tiffin':2
                                  'search_release'  
                                     'search_rest'  '1':6 'candy':9 'country':4 'exotica':2 'jazz':1 'oldies':3 'set':7 'sweets':5 'th':8
                                    'search_combo'  '1':12 'barry':5B 'bars':2A 'candy':1A,15 'country':10 'elvis':4A 'exotica':8 'for':3A 'jazz':7 'oldies':9 'set':13 'sweets':11 'th':14 'tiffin':6B
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HAP-2', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  ['non-music', 'folk, world, & country', 'spoken word', 'pop']

============================== file details ==============================
                                           'mtime'  1678464215.9571974  (2023-03-10 17:03:35)
                             'size'  5667775