======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '208'
                                          'artist'  'Protoje, Chronixx'
                                     'text_people'  ''
                                         'release'  '30 Years of Mr Bongo (Compiled by Mr Bongo)'
                                           'title'  'Who Knows'
                                           '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-4', 'q-drums-3', 'q-other-1', 'q-piano-1', "
 "'q-vocals-3']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  '2019'
                                        'comments'  ''
                                           'genre'  'loc'
                                             'bpm'  '107.9'
                                             'key'  '5A'
                                        '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))                     '107.9'
'TCON' (Content type, a.k.a. Genre)                 'loc'
'TDRC' (Recording time)                             '2019'
'TIT2' (Title/songname/content description)         'Who Knows'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Protoje, Chronixx'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1'
'TPUB' (Publisher)                                  'Mr Bongo'
'TRCK' (Track number/Position in set)               '12'
'TSRC' (ISRC (international standard recording code))  'GBCLQ1502052'
'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'                                       '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-9.78 dB'
'TXXX:replaygain_track_peak'                        '1.068575'

========================== row from database ==========================
                                              'id'  1535403
                                            'path'  /data/Music/Bulk/00localcharacter/00reggae-dub/Various Artists - 30 Years of Mr Bongo (Compiled by Mr Bongo)/Protoje, Chronixx - Who Knows.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  208
                                           'genre'  loc
                                        'filesize'  8465669
                                           'mtime'  1637158402
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00reggae dub Various Artists loc
                                      'tag_artist'  Protoje, Chronixx
                                     'tag_release'  30 Years of Mr Bongo (Compiled by Mr Bongo)
                                       'tag_title'  Who Knows
                                             'bpm'  107.9
                                    'search_title'  'knows':2 'who':1
                                   'search_artist'  'chronixx':3 'protoje':1,2
                                  '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':15 '30':6C 'artists':18 'bongo':10C,14C 'by':13C 'chronixx':5B 'compiled':11C,12C 'dub':16 'knows':2A 'loc':19 'mr':9C 'of':8C 'protoje':3B,4B 'various':17 'who':1A 'years':7C
                                    'tag_tracknum'  12
                                      'num_images'  1
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-3', 'Q-SYN-2', 'q-other-1', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-4']
                                      'lastfmtags'  []
                                        'tag_date'  2019
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637158402.050919  (2021-11-17 15:13:22)
                             'size'  8465669