======================== unified (from filesystem) ========================
                                         'bitrate'  '184.927'
                                        'duration'  '206'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  'Global Meditation (Disc D)'
                                           'title'  'Evening Song'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-1', 'Q-UNU-2', 'Q-LOCALNESS-3', "
 "'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '1992'
                                        'comments'  ''
                                           'genre'  'loc-unsorted'
                                             'bpm'  '143.213'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Global Meditation (Disc D)'
'TBPM' (BPM (beats per minute))                     '143.213'
'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted'
'TDRC' (Recording time)                             '1992'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'Evening Song'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '8'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.43 dB'
'TXXX:replaygain_track_peak'                        '0.537590'

========================== row from database ==========================
                                              'id'  476819
                                            'path'  /data/Music/Bulk/00localcharacter/VA. World 1： Trad/Global Meditation ~ Music From The Heart ~ Melody (Ellipsis Arts, 1992) [178k VBR]/08 - Guo Brothers & Shung Tian - Evening Song  (China).mp3
                                         'working'  None
                                         'bitrate'  184
                                    'duration_sec'  206
                                           'genre'  loc-unsorted
                                        'filesize'  4788316
                                           'mtime'  1621629873
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter VA. World 1： Trad ~ Music From The Heart ~ Melody (Ellipsis Arts, 1992) [178k VBR] 08 Guo Brothers & Shung Tian (China) loc unsorted
                                      'tag_artist'  [unknown]
                                     'tag_release'  Global Meditation (Disc D)
                                       'tag_title'  Evening Song
                                             'bpm'  143.213
                                    'search_title'  'evening':1 'song':2
                                   'search_artist'  'unknown':1,2
                                  'search_release'  'd':5,6 'disc':3,4 'global':1 'meditation':2
                                     'search_rest'  '1':4,5,6 '178k':19,20 '1992':17,18 'arts':15,16 'brothers':24 'china':27,28 'ellipsis':13,14 'from':9 'guo':23 'heart':11 'loc':29 'melody':12 'music':8 'shung':25 'the':10 'tian':26 'trad':7 'unsorted':30 'va':1,2 'vbr':21,22 'world':3
                                    'search_combo'  '1':14,15,16 '178k':29,30 '1992':27,28 'arts':25,26 'brothers':34 'china':37,38 'd':9C,10C 'disc':7C,8C 'ellipsis':23,24 'evening':1A 'from':19 'global':5C 'guo':33 'heart':21 'loc':39 'meditation':6C 'melody':22 'music':18 'shung':35 'song':2A 'the':20 'tian':36 'trad':17 'unknown':3B,4B 'unsorted':40 'va':11,12 'vbr':31,32 'world':13
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['mysterious', 'unknown', 'all', 'mistagged artist', 'rock']
                                        'tag_date'  1992
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629873.2258308  (2021-05-21 22:44:33)
                             'size'  4788316