======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '183'
                                          'artist'  'Ella Fitzgerald'
                                     'text_people'  ''
                                         'release'  'Jazz Legends'
                                           'title'  'Basin Street Blues'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues', 'jazz', 'female vocalists', 'jazz vocal', 'swing']"
                                     'discogstags'  "['swing', 'big band', 'easy listening', 'jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '23'
                                      'tracktotal'  ''
                                            'date'  '2011'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted;set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '142.708'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Jazz Legends'
'TBPM' (BPM (beats per minute))                     '142.708'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-jb-jazz-unsorted', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TDRC' (Recording time)                             '2011'
'TIT2' (Title/songname/content description)         'Basin Street Blues'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ella Fitzgerald'
'TRCK' (Track number/Position in set)               '23'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['swing', 'big band', 'easy listening', 'jazz']
'TXXX:lastfmtags'                                   ['blues', 'jazz', 'female vocalists', 'jazz vocal', 'swing']
'TXXX:original release date'                        ['2001', '2011']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.23 dB'
'TXXX:replaygain_track_peak'                        '0.436342'

========================== row from database ==========================
                                              'id'  677385
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Ella Fitzgerald/MBZ;#Ella Fitzgerald;#Jazz Legends;#23;#Basin Street Blues.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  183
                                           'genre'  prerock-jb-jazz-unsorted;set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  3665734
                                           'mtime'  1620528657
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country MBZ;#Ella Fitzgerald;#Jazz Legends;#23;#Basin prerock jb jazz unsorted;set pl shirleyspinoza;set pl mor
                                      'tag_artist'  Ella Fitzgerald
                                     'tag_release'  Jazz Legends
                                       'tag_title'  Basin Street Blues
                                             'bpm'  142.708
                                    'search_title'  'basin':1 'blues':3 'street':2
                                   'search_artist'  'ella':1 'fitzgerald':2
                                  'search_release'  'jazz':1 'legends':2
                                     'search_rest'  '23':14,17 'basin':15,18 'country':4 'ella':6,8 'exotica':2 'fitzgerald':9,11 'jazz':1,10,12 'jb':20 'legends':13,16 'mbz':5,7 'mor':30 'oldies':3 'pl':25 'prerock':19 'set':22,24,27,29 'shirleyspinoza':26,28 'unsorted':21,23
                                    'search_combo'  '23':21,24 'basin':1A,22,25 'blues':3A 'country':11 'ella':4B,13,15 'exotica':9 'fitzgerald':5B,16,18 'jazz':6C,8,17,19 'jb':27 'legends':7C,20,23 'mbz':12,14 'mor':37 'oldies':10 'pl':32 'prerock':26 'set':29,31,34,36 'shirleyspinoza':33,35 'street':2A 'unsorted':28,30
                                    'tag_tracknum'  23
                                      'num_images'  1
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'jazz', 'female vocalists', 'jazz vocal', 'swing']
                                        'tag_date'  2011
                                     'discogstags'  ['swing', 'big band', 'easy listening', 'jazz']

============================== file details ==============================
                                           'mtime'  1620528657.3196716  (2021-05-09 04:50:57)
                             'size'  3665734