======================== unified (from filesystem) ========================
                                         'bitrate'  '96.0'
                                        'duration'  '172'
                                          'artist'  'Tampa Red'
                                     'text_people'  ''
                                         'release'  'The Guitar Wizard '
                                           'title'  'Pretty Baby Blues'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-2', 'Q-JZFKS-3', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'Q-PLAY-3', 'q-bass-1', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-1', 'q-other-2', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['guitar', 'blues', 'mississippi', 'chicago blues', 'classic blues']"
                                     'discogstags'  "['blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '145.685'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'The Guitar Wizard '
'TBPM' (BPM (beats per minute))                     '145.685'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'Pretty Baby Blues'
'TKEY' (Initial key)                                '12B'
'TLEN' (Length)                                     '172820'
'TPE1' (Lead performer(s)/Soloist(s))               'Tampa Red'
'TPE2' (Band/orchestra/accompaniment)               'Tampa Red'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'blues'
'TXXX:lastfmtags'                                   ['guitar', 'blues', 'mississippi', 'chicago blues', 'classic blues']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.94 dB'
'TXXX:replaygain_track_peak'                        '0.483342'

========================== row from database ==========================
                                              'id'  1531078
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/30_s collection/tampa red_s hokum jug band - pretty baby blues.mp3
                                         'working'  None
                                         'bitrate'  96
                                    'duration_sec'  172
                                           'genre'  prerock-jb-blues
                                        'filesize'  2088960
                                           'mtime'  1620402198
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 30_s collection tampa red_s hokum jug band pretty baby blues prerock jb blues
                                      'tag_artist'  Tampa Red
                                     'tag_release'  The Guitar Wizard 
                                       'tag_title'  Pretty Baby Blues
                                             'bpm'  145.685
                                    'search_title'  'baby':2 'blues':3 'pretty':1
                                   'search_artist'  'red':2 'tampa':1
                                  'search_release'  'guitar':2 'the':1 'wizard':3
                                     'search_rest'  '30':5 'baby':15 'band':13 'blues':16 'collection':7 'country':4 'exotica':2 'hokum':11 'jazz':1 'jb':18 'jug':12 'oldies':3 'prerock':17 'pretty':14 'red':9 's':6,10 'tampa':8
                                    'search_combo'  '30':13 'baby':2A,23 'band':21 'blues':3A,24 'collection':15 'country':12 'exotica':10 'guitar':7C 'hokum':19 'jazz':9 'jb':26 'jug':20 'oldies':11 'prerock':25 'pretty':1A,22 'red':5B,17 's':14,18 'tampa':4B,16 'the':6C 'wizard':8C
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['guitar', 'blues', 'mississippi', 'chicago blues', 'classic blues']
                                        'tag_date'  1935
                                     'discogstags'  ['blues']

============================== file details ==============================
                                           'mtime'  1620402197.8779037  (2021-05-07 17:43:17)
                             'size'  2088960