======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '169'
                                          'artist'  'Ruby Johnson & Group'
                                     'text_people'  ''
                                         'release'  'Rarest of the rare, vol. 16 (Memories of days gone by)'
                                           'title'  'Here I go again'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '23'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'rock-pop-early'
                                             'bpm'  '118.221'
                                             'key'  '2B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Rarest of the rare, vol. 16 (Memories of days gone by)'
'TBPM' (BPM (beats per minute))                     '118.221'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early'
'TIT2' (Title/songname/content description)         'Here I go again'
'TKEY' (Initial key)                                '2B'
'TPE1' (Lead performer(s)/Soloist(s))               'Ruby Johnson & Group'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '23'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.99 dB'
'TXXX:replaygain_track_peak'                        '0.425159'

========================== row from database ==========================
                                              'id'  978593
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/rarest of the rare vol 16 (memories of days gone by) fct mp556/23 - ruby johnson & group - here i go again.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  169
                                           'genre'  rock-pop-early
                                        'filesize'  2782424
                                           'mtime'  1620736573
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country rarest (memories fct mp556 23 ruby johnson group here rock pop early
                                      'tag_artist'  Ruby Johnson & Group
                                     'tag_release'  Rarest of the rare, vol. 16 (Memories of days gone by)
                                       'tag_title'  Here I go again
                                             'bpm'  118.221
                                    'search_title'  'again':4 'go':3 'here':1 'i':2
                                   'search_artist'  'group':3 'johnson':2 'ruby':1
                                  'search_release'  'by':12,13 'days':10 'gone':11 'memories':8,9 'of':2 'rare':4,5 'rarest':1 'the':3 'vol':6,7
                                     'search_rest'  '23':10 'country':4 'early':17 'exotica':2 'fct':8 'group':13 'here':14 'jazz':1 'johnson':12 'memories':6,7 'mp556':9 'oldies':3 'pop':16 'rarest':5 'rock':15 'ruby':11
                                    'search_combo'  '23':30 'again':4A 'by':19C,20C 'country':24 'days':17C 'early':37 'exotica':22 'fct':28 'go':3A 'gone':18C 'group':7B,33 'here':1A,34 'i':2A 'jazz':21 'johnson':6B,32 'memories':15C,16C,26,27 'mp556':29 'of':9C 'oldies':23 'pop':36 'rare':11C,12C 'rarest':8C,25 'rock':35 'ruby':5B,31 'the':10C 'vol':13C,14C
                                    'tag_tracknum'  23
                                      'num_images'  1
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736572.9600208  (2021-05-11 14:36:12)
                             'size'  2782424