======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '146'
                                          'artist'  'Jack Costanzo'
                                     'text_people'  ''
                                         'release'  'Ultra-Lounge, Vol. 2: Mambo Fever'
                                           'title'  'Peter Gunn Mambo'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['lounge', '11', 'jazz', 'illstreet', 'latin']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '03'
                                      'tracktotal'  ''
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-lounge or exotica or bossa'
                                             'bpm'  '98.120'
                                             'key'  '4A'
                                        '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))                     '98.120'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-lounge or exotica or bossa'
'TDRC' (Recording time)                             '1996'
'TIT2' (Title/songname/content description)         'Peter Gunn Mambo'
'TKEY' (Initial key)                                '4A'
'TLEN' (Length)                                     '146886'
'TPE1' (Lead performer(s)/Soloist(s))               'Jack Costanzo'
'TRCK' (Track number/Position in set)               '03'
'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'                                   ['lounge', '11', 'jazz', 'illstreet', 'latin']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.15 dB'
'TXXX:replaygain_track_peak'                        '0.827378'

========================== row from database ==========================
                                              'id'  766833
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Ultra Lounge 02 - Mambo Fever/03. Jack Costanzo - Peter Gunn Mambo.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  146
                                           'genre'  prerock-jb-jazz-lounge or exotica or bossa
                                        'filesize'  3537563
                                           'mtime'  1620536824
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 02 03. prerock jb jazz lounge or exotica or bossa
                                      'tag_artist'  Jack Costanzo
                                     'tag_release'  Ultra-Lounge, Vol. 2: Mambo Fever
                                       'tag_title'  Peter Gunn Mambo
                                             'bpm'  98.12
                                    'search_title'  'gunn':2 'mambo':3 'peter':1
                                   'search_artist'  'costanzo':2 'jack':1
                                  'search_release'  '2':6,7 'fever':9 'lounge':2 'mambo':8 'ultra':1 'ultralounge':3 'vol':4,5
                                     'search_rest'  '03':5,6 'bossa':11 'country':4 'exotica':2 'jazz':1 'jb':8 'lounge':9 'oldies':3 'or':10 'prerock':7
                                    'search_combo'  '03':19,20 '2':11C,12C 'bossa':25 'costanzo':5B 'country':18 'exotica':16 'fever':14C 'gunn':2A 'jack':4B 'jazz':15 'jb':22 'lounge':7C,23 'mambo':3A,13C 'oldies':17 'or':24 'peter':1A 'prerock':21 'ultra':6C 'ultralounge':8C 'vol':9C,10C
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  4A
                                           '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-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['lounge', '11', 'jazz', 'illstreet', 'latin']
                                        'tag_date'  1996
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620536823.8342545  (2021-05-09 07:07:03)
                             'size'  3537563