======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '145'
                                          'artist'  'Van Alexander'
                                     'text_people'  ''
                                         'release'  'Ultra-Lounge, Vol. 2: Mambo Fever'
                                           'title'  'Way Down Yonder In New Orleans [Mambo] [Mambo]'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'q-syn-2', 'q-bass-4', 'q-busy-2', 'q-grit-1', "
 "'q-play-2', 'Q-JZFKS-2', 'Q-OLDST-2', 'q-chart-2', 'q-drums-3', 'q-other-3', "
 "'q-piano-1', 'q-vocals-1', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-2']")
                                      'lastfmtags'  "['all', 'a little eggplanty', 'swing', 'spotify']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '09'
                                      'tracktotal'  ''
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-lounge or exotica or bossa'
                                             'bpm'  '104.336'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Ultra-Lounge, Vol. 2: Mambo Fever'
'TBPM' (BPM (beats per minute))                     '104.336'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-lounge or exotica or bossa'
'TDRC' (Recording time)                             '1996'
'TIT2' (Title/songname/content description)         'Way Down Yonder In New Orleans [Mambo] [Mambo]'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '145919'
'TPE1' (Lead performer(s)/Soloist(s))               'Van Alexander'
'TRCK' (Track number/Position in set)               '09'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['all', 'a little eggplanty', 'swing', 'spotify']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.39 dB'
'TXXX:replaygain_track_peak'                        '0.716792'

========================== row from database ==========================
                                              'id'  765334
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Ultra Lounge 02 - Mambo Fever/09. Van Alexander - Way Down Yonder In New Orleans [Mambo] [Mambo].mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  145
                                           'genre'  prerock-jb-jazz-lounge or exotica or bossa
                                        'filesize'  3514367
                                           'mtime'  1620536830
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 02 09. prerock jb jazz lounge or exotica or bossa
                                      'tag_artist'  Van Alexander
                                     'tag_release'  Ultra-Lounge, Vol. 2: Mambo Fever
                                       'tag_title'  Way Down Yonder In New Orleans [Mambo] [Mambo]
                                             'bpm'  104.336
                                    'search_title'  'down':2 'in':4 'mambo':7,8 'new':5 'orleans':6 'way':1 'yonder':3
                                   'search_artist'  'alexander':2 'van':1
                                  'search_release'  '2':6,7 'fever':9 'lounge':2 'mambo':8 'ultra':1 'ultralounge':3 'vol':4,5
                                     'search_rest'  '09':5,6 'bossa':11 'country':4 'exotica':2 'jazz':1 'jb':8 'lounge':9 'oldies':3 'or':10 'prerock':7
                                    'search_combo'  '09':24,25 '2':16C,17C 'alexander':10B 'bossa':30 'country':23 'down':2A 'exotica':21 'fever':19C 'in':4A 'jazz':20 'jb':27 'lounge':12C,28 'mambo':7A,8A,18C 'new':5A 'oldies':22 'or':29 'orleans':6A 'prerock':26 'ultra':11C 'ultralounge':13C 'van':9B 'vol':14C,15C 'way':1A 'yonder':3A
                                    'tag_tracknum'  9
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['all', 'a little eggplanty', 'swing', 'spotify']
                                        'tag_date'  1996
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620536830.332784  (2021-05-09 07:07:10)
                             'size'  3514367