======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '176'
                                          'artist'  'Duke Ellington'
                                     'text_people'  ''
                                         'release'  'GOLDEN BIG BAND ERA VOL. 2'
                                           'title'  "AIN'T MISBEHAVIN"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['big band', 'jazz', 'piano', 'blues', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '16'
                                      'tracktotal'  ''
                                            'date'  '1950'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-soft-swing;prerock-jb-jazz-soft-salon or easy'
                                             'bpm'  '142.307'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'GOLDEN BIG BAND ERA VOL. 2'
'TBPM' (BPM (beats per minute))                     '142.307'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-jb-jazz-soft-swing', 'prerock-jb-jazz-soft-salon or easy']
'TDRC' (Recording time)                             '1950'
'TIT2' (Title/songname/content description)         "AIN'T MISBEHAVIN"
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Duke Ellington'
'TRCK' (Track number/Position in set)               '16'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['big band', 'jazz', 'piano', 'blues', 'swing']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.62 dB'
'TXXX:replaygain_track_peak'                        '0.658669'

========================== row from database ==========================
                                              'id'  1519792
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Duke Ellington/GOLDEN BIG BAND ERA VOL. 2/16_DUKE ELLINGTON_AIN_T MISBEHAVIN_GOLDEN BIG BAND ERA VOL. 2.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  176
                                           'genre'  prerock-jb-jazz-soft-swing;prerock-jb-jazz-soft-salon or easy
                                        'filesize'  2821743
                                           'mtime'  1620572496
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 16_DUKE ELLINGTON_AIN_T MISBEHAVIN_GOLDEN prerock jb jazz soft swing;prerock jb jazz soft salon or easy
                                      'tag_artist'  Duke Ellington
                                     'tag_release'  GOLDEN BIG BAND ERA VOL. 2
                                       'tag_title'  AIN'T MISBEHAVIN
                                             'bpm'  142.307
                                    'search_title'  'ain':1 'aint':3 'misbehavin':4 't':2
                                   'search_artist'  'duke':1 'ellington':2
                                  'search_release'  '2':7 'band':3 'big':2 'era':4 'golden':1 'vol':5,6
                                     'search_rest'  '16':5 'ain':8 'country':4 'duke':6 'easy':21 'ellington':7 'exotica':2 'golden':11 'jazz':1 'jb':13 'misbehavin':10 'oldies':3 'or':20 'prerock':12,16,18 'salon':19 'soft':14 'swing':15,17 't':9
                                    'search_combo'  '16':18 '2':13C 'ain':1A,21 'aint':3A 'band':9C 'big':8C 'country':17 'duke':5B,19 'easy':34 'ellington':6B,20 'era':10C 'exotica':15 'golden':7C,24 'jazz':14 'jb':26 'misbehavin':4A,23 'oldies':16 'or':33 'prerock':25,29,31 'salon':32 'soft':27 'swing':28,30 't':2A,22 'vol':11C,12C
                                    'tag_tracknum'  16
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-4', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['big band', 'jazz', 'piano', 'blues', 'swing']
                                        'tag_date'  1950
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620572496.4863067  (2021-05-09 17:01:36)
                             'size'  2821743