======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '199'
                                          'artist'  'U. Srinivas'
                                     'text_people'  ''
                                         'release'  'Mandolin Ecstasy'
                                           'title'  'Thiruppugazh'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-3', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-4', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['mandolin', 'indian classical', 'indian', 'carnatic']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '1986'
                                        'comments'  ''
                                           'genre'  'loc-asia-india-classical'
                                             'bpm'  '145.476'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Mandolin Ecstasy'
'TBPM' (BPM (beats per minute))                     '145.476'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia-india-classical'
'TDRC' (Recording time)                             '1986'
'TIT2' (Title/songname/content description)         'Thiruppugazh'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'U. Srinivas'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '3'
'TXXX:discogstags'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['mandolin', 'indian classical', 'indian', 'carnatic']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.32 dB'
'TXXX:replaygain_track_peak'                        '0.529892'

========================== row from database ==========================
                                              'id'  1400472
                                            'path'  /data/Music/Bulk/00localcharacter/00asia/u. srinivas - mandolin ecstasy [1986]/6 - thiruppugazh.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  199
                                           'genre'  loc-asia-india-classical
                                        'filesize'  4793993
                                           'mtime'  1621627026
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia u. srinivas mandolin ecstasy [1986] 6 thiruppugazh loc asia india classical
                                      'tag_artist'  U. Srinivas
                                     'tag_release'  Mandolin Ecstasy
                                       'tag_title'  Thiruppugazh
                                             'bpm'  145.476
                                    'search_title'  'thiruppugazh':1
                                   'search_artist'  'srinivas':3 'u':1,2
                                  'search_release'  'ecstasy':2 'mandolin':1
                                     'search_rest'  '00asia':1 '1986':7,8 '6':9 'asia':12 'classical':14 'ecstasy':6 'india':13 'loc':11 'mandolin':5 'srinivas':4 'thiruppugazh':10 'u':2,3
                                    'search_combo'  '00asia':7 '1986':13,14 '6':15 'asia':18 'classical':20 'ecstasy':6C,12 'india':19 'loc':17 'mandolin':5C,11 'srinivas':4B,10 'thiruppugazh':1A,16 'u':2B,3B,8,9
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['mandolin', 'indian classical', 'indian', 'carnatic']
                                        'tag_date'  1986
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1621627026.1390429  (2021-05-21 21:57:06)
                             'size'  4793993