======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '200'
                                          'artist'  'Count Basie & His Orchestra'
                                     'text_people'  'Count Basie/Harry Edison'
                                         'release'  "America's #1 Band"
                                           'title'  'Mutton Leg'
                                           'quals'  ("['Q-UNU-1', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-1']")
                                      'lastfmtags'  "['big band', 'jazz', '40s', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '20'
                                      'tracktotal'  '23'
                                            'date'  '1946'
                                        'comments'  ''
                                           'genre'  'set-th-novelty'
                                             'bpm'  '98.454'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 000009F6 000009F6 00006878 00006878 00005139 00005139 00007F1D 00007F1D '
 '00004B82 00004B82')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000870 000000000086F100 00000000 00496220 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '23+FD615FC4B94F03699484BD1CFB2B0868+4878806'
'TALB' (Album/Movie/Show title)                     "America's #1 Band"
'TBPM' (BPM (beats per minute))                     '98.454'
'TCOM' (Composer)                                   'Count Basie/Harry Edison'
'TCON' (Content type, a.k.a. Genre)                 'set-th-novelty'
'TDRC' (Recording time)                             '1946'
'TENC' (Encoded by)                                 'iTunes 8.0.2'
'TIT2' (Title/songname/content description)         'Mutton Leg'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Count Basie & His Orchestra'
'TPOS' (Part of a set)                              '3/4'
'TRCK' (Track number/Position in set)               '20/23'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['big band', 'jazz', '40s', 'swing']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.42 dB'
'TXXX:replaygain_track_peak'                        '0.494099'

========================== row from database ==========================
                                              'id'  769710
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Zimelis [Chow, Baby!]/Count Basie & His Orch. - Mutton Leg 1.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  200
                                           'genre'  set-th-novelty
                                        'filesize'  4816529
                                           'mtime'  1620343074
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Zimelis [Chow, Baby!] Orch. set th novelty
                                      'tag_artist'  Count Basie & His Orchestra
                                     'tag_release'  America's #1 Band
                                       'tag_title'  Mutton Leg
                                             'bpm'  98.454
                                    'search_title'  'leg':2 'mutton':1
                                   'search_artist'  'basie':2 'count':1 'his':3 'orchestra':4
                                  'search_release'  '1':4,5 'america':1 'americas':3 'band':6 's':2
                                     'search_rest'  'baby':8,9 'chow':6,7 'country':4 'exotica':2 'jazz':1 'novelty':14 'oldies':3 'orch':10,11 'set':12 'th':13 'zimelis':5
                                    'search_combo'  '1':10C,11C 'america':7C 'americas':9C 'baby':20,21 'band':12C 'basie':4B 'chow':18,19 'count':3B 'country':16 'exotica':14 'his':5B 'jazz':13 'leg':2A 'mutton':1A 'novelty':26 'oldies':15 'orch':22,23 'orchestra':6B 's':8C 'set':24 'th':25 'zimelis':17
                                    'tag_tracknum'  20
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-3', 'q-syn-1', 'q-chart-2', 'q-other-4', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['big band', 'jazz', '40s', 'swing']
                                        'tag_date'  1946
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620343074.049928  (2021-05-07 01:17:54)
                             'size'  4816529