======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '139'
                                          'artist'  'Billy May'
                                     'text_people'  ''
                                         'release'  'Ultra-Lounge, Vol. 2: Mambo Fever'
                                           'title'  "Hernando's Hideaway"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['lounge', 'easy listening', 'space age pop', 'jazz', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  ''
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-lounge or exotica or bossa'
                                             'bpm'  '120.042'
                                             'key'  '5A'
                                        '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))                     '120.042'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-lounge or exotica or bossa'
'TDRC' (Recording time)                             '1996'
'TIT2' (Title/songname/content description)         "Hernando's Hideaway"
'TKEY' (Initial key)                                '5A'
'TLEN' (Length)                                     '139833'
'TPE1' (Lead performer(s)/Soloist(s))               'Billy May'
'TRCK' (Track number/Position in set)               '13'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['lounge', 'easy listening', 'space age pop', 'jazz', 'swing']
'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'                        '+1.27 dB'
'TXXX:replaygain_track_peak'                        '0.634688'

========================== row from database ==========================
                                              'id'  1515720
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Ultra Lounge 02 - Mambo Fever/13. Billy May - Hernando_s Hideaway.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  139
                                           'genre'  prerock-jb-jazz-lounge or exotica or bossa
                                        'filesize'  3368290
                                           'mtime'  1620536836
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 02 13. Hernando_s prerock jb jazz lounge or exotica or bossa
                                      'tag_artist'  Billy May
                                     'tag_release'  Ultra-Lounge, Vol. 2: Mambo Fever
                                       'tag_title'  Hernando's Hideaway
                                             'bpm'  120.042
                                    'search_title'  'hernando':1 'hernandos':3 'hideaway':4 's':2
                                   'search_artist'  'billy':1 'may':2
                                  'search_release'  '2':6,7 'fever':9 'lounge':2 'mambo':8 'ultra':1 'ultralounge':3 'vol':4,5
                                     'search_rest'  '13':5,6 'bossa':13 'country':4 'exotica':2 'hernando':7 'jazz':1 'jb':10 'lounge':11 'oldies':3 'or':12 'prerock':9 's':8
                                    'search_combo'  '13':20,21 '2':12C,13C 'billy':5B 'bossa':28 'country':19 'exotica':17 'fever':15C 'hernando':1A,22 'hernandos':3A 'hideaway':4A 'jazz':16 'jb':25 'lounge':8C,26 'mambo':14C 'may':6B 'oldies':18 'or':27 'prerock':24 's':2A,23 'ultra':7C 'ultralounge':9C 'vol':10C,11C
                                    'tag_tracknum'  13
                                      'num_images'  1
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', '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'  ['lounge', 'easy listening', 'space age pop', 'jazz', 'swing']
                                        'tag_date'  1996
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620536836.2658503  (2021-05-09 07:07:16)
                             'size'  3368290