======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '172'
                                          'artist'  'Blind Boy Fuller'
                                     'text_people'  ''
                                         'release'  'Geil & Sexy - Copulation Blues'
                                           'title'  'Shake It, Baby'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-3', 'Q-LOCALNESS-3', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['guitar', 'blues', 'classic blues', 'delta blues', 'piedmont blues']"
                                     'discogstags'  "['blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1930'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '120.8'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Geil & Sexy - Copulation Blues'
'TBPM' (BPM (beats per minute))                     '120.8'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDRC' (Recording time)                             '1930'
'TIT2' (Title/songname/content description)         'Shake It, Baby'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Blind Boy Fuller'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '073,203'
'TXXX:Mp3gain_undo'                                 '+007,+007,N'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:Tracknum'                                     '20'
'TXXX:discogstags'                                  'blues'
'TXXX:lastfmtags'                                   ['guitar', 'blues', 'classic blues', 'delta blues', 'piedmont blues']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.96 dB'
'TXXX:replaygain_track_peak'                        '0.324446'

========================== row from database ==========================
                                              'id'  1362413
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Bob Howe & Frankie Giggs - Flashbacks - 1920s-1940 2. Geil & Sexy - Copulation Blues/20 - Blind Boy Fuller - Shake It, Baby.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  172
                                           'genre'  prerock-jb-blues
                                        'filesize'  2761455
                                           'mtime'  1620402240
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Bob Howe Frankie Giggs Flashbacks 1920s 1940 2. 20 prerock jb blues
                                      'tag_artist'  Blind Boy Fuller
                                     'tag_release'  Geil & Sexy - Copulation Blues
                                       'tag_title'  Shake It, Baby
                                             'bpm'  120.8
                                    'search_title'  'baby':4 'it':2,3 'shake':1
                                   'search_artist'  'blind':1 'boy':2 'fuller':3
                                  'search_release'  'blues':4 'copulation':3 'geil':1 'sexy':2
                                     'search_rest'  '1920s':10 '1940':11 '2':12,13 '20':14 'blues':17 'bob':5 'country':4 'exotica':2 'flashbacks':9 'frankie':7 'giggs':8 'howe':6 'jazz':1 'jb':16 'oldies':3 'prerock':15
                                    'search_combo'  '1920s':21 '1940':22 '2':23,24 '20':25 'baby':4A 'blind':5B 'blues':11C,28 'bob':16 'boy':6B 'copulation':10C 'country':15 'exotica':13 'flashbacks':20 'frankie':18 'fuller':7B 'geil':8C 'giggs':19 'howe':17 'it':2A,3A 'jazz':12 'jb':27 'oldies':14 'prerock':26 'sexy':9C 'shake':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['guitar', 'blues', 'classic blues', 'delta blues', 'piedmont blues']
                                        'tag_date'  1930
                                     'discogstags'  ['blues']

============================== file details ==============================
                                           'mtime'  1620402239.7944899  (2021-05-07 17:43:59)
                             'size'  2761455