======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '210'
                                          'artist'  'The Brian Setzer Orchestra'
                                     'text_people'  ''
                                         'release'  'Brian Setzer, His Orchestra & The Stray Cats'
                                           'title'  'That Mellow Saxophone'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'big band', 'rock', 'rockabilly', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '03'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'rock-rockabilly or psychobilly'
                                             'bpm'  '113.136'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Brian Setzer, His Orchestra & The Stray Cats'
'TBPM' (BPM (beats per minute))                     '113.136'
'TCON' (Content type, a.k.a. Genre)                 'rock-rockabilly or psychobilly'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'That Mellow Saxophone'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Brian Setzer Orchestra'
'TRCK' (Track number/Position in set)               '03'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'big band', 'rock', 'rockabilly', 'swing']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.20 dB'
'TXXX:replaygain_track_peak'                        '0.428787'

========================== row from database ==========================
                                              'id'  679076
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Brian Setzer Orchestra/MBZ;#The Brian Setzer Orchestra;#Brian Setzer, His Orchestra & The Stray Cats;#03;#That Mellow Saxophone.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  210
                                           'genre'  rock-rockabilly or psychobilly
                                        'filesize'  4207928
                                           'mtime'  1620525112
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country MBZ;#The Orchestra;#Brian Cats;#03;#That rock rockabilly or psychobilly
                                      'tag_artist'  The Brian Setzer Orchestra
                                     'tag_release'  Brian Setzer, His Orchestra & The Stray Cats
                                       'tag_title'  That Mellow Saxophone
                                             'bpm'  113.136
                                    'search_title'  'mellow':2 'saxophone':3 'that':1
                                   'search_artist'  'brian':2 'orchestra':4 'setzer':3 'the':1
                                  'search_release'  'brian':1 'cats':8 'his':4 'orchestra':5 'setzer':2,3 'stray':7 'the':6
                                     'search_rest'  '03':14,17 'brian':10,12 'cats':13,16 'country':4 'exotica':2 'jazz':1 'mbz':5,7 'oldies':3 'or':21 'orchestra':9,11 'psychobilly':22 'rock':19 'rockabilly':20 'that':15,18 'the':6,8
                                    'search_combo'  '03':29,32 'brian':5B,8C,25,27 'cats':15C,28,31 'country':19 'exotica':17 'his':11C 'jazz':16 'mbz':20,22 'mellow':2A 'oldies':18 'or':36 'orchestra':7B,12C,24,26 'psychobilly':37 'rock':34 'rockabilly':35 'saxophone':3A 'setzer':6B,9C,10C 'stray':14C 'that':1A,30,33 'the':4B,13C,21,23
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  1A
                                           '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-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['jazz', 'big band', 'rock', 'rockabilly', 'swing']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620525111.9217193  (2021-05-09 03:51:51)
                             'size'  4207928