======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '479'
                                          'artist'  'Double Trouble'
                                     'text_people'  ''
                                         'release'  '30 Years of Mr Bongo (Compiled by Mr Bongo)'
                                           'title'  'Double Trouble at the Amphitheater'
                                           'quals'  ("['Q-HAP-3', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-SYN-2', 'Q-LOCALNESS-3', 'Q-OLDST-2', 'Q-PLAY-3', 'Q-CHART-2', "
 "'Q-MIXBEAT-2', 'q-bass-2', 'q-drums-4', 'q-other-1', 'q-piano-1', "
 "'q-vocals-4']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2019'
                                        'comments'  ''
                                           'genre'  'loc'
                                             'bpm'  '112.2'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     '30 Years of Mr Bongo (Compiled by Mr Bongo)'
'TBPM' (BPM (beats per minute))                     '112.2'
'TCON' (Content type, a.k.a. Genre)                 'loc'
'TDRC' (Recording time)                             '2019'
'TIT2' (Title/songname/content description)         'Double Trouble at the Amphitheater'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Double Trouble'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1'
'TPUB' (Publisher)                                  'Mr Bongo'
'TRCK' (Track number/Position in set)               '4'
'TSRC' (ISRC (international standard recording code))  'GBCLQ0601114'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-12.45 dB'
'TXXX:replaygain_track_peak'                        '1.223766'

========================== row from database ==========================
                                              'id'  1535195
                                            'path'  /data/Music/Bulk/00localcharacter/00reggae-dub/Various Artists - 30 Years of Mr Bongo (Compiled by Mr Bongo)/Double Trouble - Double Trouble at the Amphitheater.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  479
                                           'genre'  loc
                                        'filesize'  19321156
                                           'mtime'  1637158400
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00reggae dub Various Artists loc
                                      'tag_artist'  Double Trouble
                                     'tag_release'  30 Years of Mr Bongo (Compiled by Mr Bongo)
                                       'tag_title'  Double Trouble at the Amphitheater
                                             'bpm'  112.2
                                    'search_title'  'amphitheater':5 'at':3 'double':1 'the':4 'trouble':2
                                   'search_artist'  'double':1 'trouble':2
                                  'search_release'  '30':1 'bongo':5,9 'by':8 'compiled':6,7 'mr':4 'of':3 'years':2
                                     'search_rest'  '00reggae':1 'artists':4 'dub':2 'loc':5 'various':3
                                    'search_combo'  '00reggae':17 '30':8C 'amphitheater':5A 'artists':20 'at':3A 'bongo':12C,16C 'by':15C 'compiled':13C,14C 'double':1A,6B 'dub':18 'loc':21 'mr':11C 'of':10C 'the':4A 'trouble':2A,7B 'various':19 'years':9C
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-CHART-2', 'q-drums-4', 'Q-SYN-2', 'q-other-1', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-2']
                                      'lastfmtags'  []
                                        'tag_date'  2019
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637158399.6781878  (2021-11-17 15:13:19)
                             'size'  19321156