======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '183'
                                          'artist'  'Tiny Parham & His Musicians'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Pig's Feet And Slaw"
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'swing', '20s', 'all', 'chicago']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  '19'
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'set-th-novelty'
                                             'bpm'  '114.544'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 00000456 0000043D 00004491 000042F1 0000D9F5 0000D9F5 00006A5C 00006920 '
 '00012387 00012387')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000924 00000000007B2DCC 00000000 0042FBC2 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_1:eng'                            '0D0D7B13+258999+19+150+14849+27991+41073+56062+69527+85008+97837+111085+123168+136671+150400+162575+177711+190025+204381+217457+231064+244967'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '11'
'TBPM' (BPM (beats per minute))                     '114.544'
'TCON' (Content type, a.k.a. Genre)                 'set-th-novelty'
'TDRC' (Recording time)                             '1980'
'TENC' (Encoded by)                                 'iTunes 11.0.5'
'TIT2' (Title/songname/content description)         "Pig's Feet And Slaw"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tiny Parham & His Musicians'
'TRCK' (Track number/Position in set)               '11/19'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'swing', '20s', 'all', 'chicago']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.68 dB'
'TXXX:replaygain_track_peak'                        '0.493442'

========================== row from database ==========================
                                              'id'  1511094
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Zimelis [Chow, Baby!]/Tiny Parham & His Musicians - Pig_s Feet And Slaw.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  183
                                           'genre'  set-th-novelty
                                        'filesize'  4396971
                                           'mtime'  1620343100
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Zimelis [Chow, Baby!] Pig_s set th novelty
                                      'tag_artist'  Tiny Parham & His Musicians
                                     'tag_release'  None
                                       'tag_title'  Pig's Feet And Slaw
                                             'bpm'  114.544
                                    'search_title'  'and':5 'feet':4 'pig':1 'pigs':3 's':2 'slaw':6
                                   'search_artist'  'his':3 'musicians':4 'parham':2 'tiny':1
                                  'search_release'  
                                     'search_rest'  'baby':8,9 'chow':6,7 'country':4 'exotica':2 'jazz':1 'novelty':14 'oldies':3 'pig':10 's':11 'set':12 'th':13 'zimelis':5
                                    'search_combo'  'and':5A 'baby':18,19 'chow':16,17 'country':14 'exotica':12 'feet':4A 'his':9B 'jazz':11 'musicians':10B 'novelty':24 'oldies':13 'parham':8B 'pig':1A,20 'pigs':3A 's':2A,21 'set':22 'slaw':6A 'th':23 'tiny':7B 'zimelis':15
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-4', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['jazz', 'swing', '20s', 'all', 'chicago']
                                        'tag_date'  1980
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620343100.1927073  (2021-05-07 01:18:20)
                             'size'  4396971