======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '184'
                                          'artist'  'Big Youth'
                                     'text_people'  ''
                                         'release'  'Reggae Singles'
                                           'title'  'Hit The Road Jack'
                                           '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-2', 'q-drums-3', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['jamaica', 'reggae', 'dub', 'roots reggae', 'dancehall', 'roots']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '16'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'loc-style-reggae or dub or ska or dancehall-dub-roots and reggae'
                                             'bpm'  '141.512'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Reggae Singles'
'TBPM' (BPM (beats per minute))                     '141.512'
'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)         'Hit The Road Jack'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Big Youth'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '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:lastfmtags'                                   ['jamaica', 'reggae', 'dub', 'roots reggae', 'dancehall', 'roots']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.06 dB'
'TXXX:replaygain_track_peak'                        '0.525613'

========================== row from database ==========================
                                              'id'  985105
                                            'path'  /data/Music/Bulk/00localcharacter/reggae singles/[TR 7977A] Big Youth - Hit The Road Jack.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  184
                                           'genre'  loc-style-reggae or dub or ska or dancehall-dub-roots and reggae
                                        'filesize'  2958953
                                           'mtime'  1620524128
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter reggae singles [TR 7977A] loc style reggae or dub or ska or dancehall dub roots and reggae
                                      'tag_artist'  Big Youth
                                     'tag_release'  Reggae Singles
                                       'tag_title'  Hit The Road Jack
                                             'bpm'  141.512
                                    'search_title'  'hit':1 'jack':4 'road':3 'the':2
                                   'search_artist'  'big':1 'youth':2
                                  'search_release'  'reggae':1 'singles':2
                                     'search_rest'  '7977a':5,6 'and':14 'dancehall':12 'dub':10 'loc':7 'or':9 'reggae':1 'roots':13 'singles':2 'ska':11 'style':8 'tr':3,4
                                    'search_combo'  '7977a':13,14 'and':22 'big':5B 'dancehall':20 'dub':18 'hit':1A 'jack':4A 'loc':15 'or':17 'reggae':7C,9 'road':3A 'roots':21 'singles':8C,10 'ska':19 'style':16 'the':2A 'tr':11,12 'youth':6B
                                    'tag_tracknum'  16
                                      'num_images'  0
                                             'key'  2A
                                           '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-3', 'q-syn-2', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['jamaica', 'reggae', 'dub', 'roots reggae', 'dancehall', 'roots']
                                        'tag_date'  2002
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620524127.580909  (2021-05-09 03:35:27)
                             'size'  2958953