======================== unified (from filesystem) ========================
                                         'bitrate'  '231.607'
                                        'duration'  '334'
                                          'artist'  'Bob Marley & The Wailers'
                                     'text_people'  ''
                                         'release'  'Legend - The Best Of Bob Marley & The Wailers'
                                           'title'  'Stir It Up'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-UNU-2', 'Q-HHRNBTT-2', 'Q-OLDST-2', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['reggae', 'roots reggae', 'ska', 'roots', 'classic rock']"
                                     'discogstags'  "['reggae', 'roots reggae']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  '16'
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'loc-style-reggae or dub or ska or dancehall-dub-roots and reggae'
                                             'bpm'  '145.790'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Legend - The Best Of Bob Marley & The Wailers'
'TBPM' (BPM (beats per minute))                     '145.790'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-reggae or dub or ska or dancehall-dub-roots and reggae'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Stir It Up'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bob Marley & The Wailers'
'TRCK' (Track number/Position in set)               '7/16'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['reggae', 'roots reggae']
'TXXX:lastfmtags'                                   ['reggae', 'roots reggae', 'ska', 'roots', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.09 dB'
'TXXX:replaygain_track_peak'                        '0.510397'

========================== row from database ==========================
                                              'id'  1378618
                                            'path'  /data/Music/Bulk/00localcharacter/00reggae-dub/Bob Marley & The Wailers/Legend/07 - Stir It Up.mp3
                                         'working'  None
                                         'bitrate'  231
                                    'duration_sec'  334
                                           'genre'  loc-style-reggae or dub or ska or dancehall-dub-roots and reggae
                                        'filesize'  9720481
                                           'mtime'  1620521151
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00reggae dub 07 loc style reggae or dub or ska or dancehall dub roots and reggae
                                      'tag_artist'  Bob Marley & The Wailers
                                     'tag_release'  Legend - The Best Of Bob Marley & The Wailers
                                       'tag_title'  Stir It Up
                                             'bpm'  145.79
                                    'search_title'  'it':2 'stir':1 'up':3
                                   'search_artist'  'bob':1 'marley':2 'the':3 'wailers':4
                                  'search_release'  'best':3 'bob':5 'legend':1 'marley':6 'of':4 'the':2 'wailers':7
                                     'search_rest'  '00reggae':1 'and':10 'dancehall':8 'dub':2 'loc':3 'or':6 'reggae':5 'roots':9 'ska':7 'style':4
                                    'search_combo'  '00reggae':15 'and':24 'best':10C 'bob':4B,12C 'dancehall':22 'dub':16 'it':2A 'legend':8C 'loc':17 'marley':5B,13C 'of':11C 'or':20 'reggae':19 'roots':23 'ska':21 'stir':1A 'style':18 'the':6B,9C 'up':3A 'wailers':7B,14C
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-2', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['reggae', 'roots reggae', 'ska', 'roots', 'classic rock']
                                        'tag_date'  2002
                                     'discogstags'  ['reggae', 'roots reggae']

============================== file details ==============================
                                           'mtime'  1620521151.4867642  (2021-05-09 02:45:51)
                             'size'  9720481