======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '314'
                                          'artist'  'Danny Thompson'
                                     'text_people'  'Bernie Holland/Danny Thompson/Tony Roberts'
                                         'release'  'The Global Sounds of Hannibal Records'
                                           'title'  'Yucateca'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-2', "
 "'Q-OLDST-2', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'skiffle', 'folk rock', 'bass', 'numbers']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '1987'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '123.557'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'The Global Sounds of Hannibal Records'
'TBPM' (BPM (beats per minute))                     '123.557'
'TCOM' (Composer)                                   'Bernie Holland/Danny Thompson/Tony Roberts'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1987'
'TIT2' (Title/songname/content description)         'Yucateca'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Danny Thompson'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Hannibal Records'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['jazz', 'skiffle', 'folk rock', 'bass', 'numbers']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'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'                        '+0.20 dB'
'TXXX:replaygain_track_peak'                        '0.557074'

========================== row from database ==========================
                                              'id'  477048
                                            'path'  /data/Music/Bulk/00localcharacter/VA. World 1： Trad/The Global Sounds Of Hannibal Records (LaFolieDuJour, 2010) [VBR]/11 DANNY THOMPSON Yucateca.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  314
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  5030065
                                           'mtime'  1620540520
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter VA. World 1： Trad Of (LaFolieDuJour, 2010) [VBR] 11 DANNY THOMPSON prerock jb jazz unsorted
                                      'tag_artist'  Danny Thompson
                                     'tag_release'  The Global Sounds of Hannibal Records
                                       'tag_title'  Yucateca
                                             'bpm'  123.557
                                    'search_title'  'yucateca':1
                                   'search_artist'  'danny':1 'thompson':2
                                  'search_release'  'global':2 'hannibal':5 'of':4 'records':6 'sounds':3 'the':1
                                     'search_rest'  '1':4,5,6 '2010':11,12 'danny':15 'du':24 'folie':23 'jazz':19 'jb':18 'jour':25,26 'la':21,22 'lafoliedujour':9,10 'of':8 'prerock':17 'thompson':16 'trad':7 'unsorted':20 'va':1,2 'vbr':13,14 'world':3
                                    'search_combo'  '1':13,14,15 '2010':20,21 'danny':2B,24 'du':33 'folie':32 'global':5C 'hannibal':8C 'jazz':28 'jb':27 'jour':34,35 'la':30,31 'lafoliedujour':18,19 'of':7C,17 'prerock':26 'records':9C 'sounds':6C 'the':4C 'thompson':3B,25 'trad':16 'unsorted':29 'va':10,11 'vbr':22,23 'world':12 'yucateca':1A
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'skiffle', 'folk rock', 'bass', 'numbers']
                                        'tag_date'  1987
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1620540520.3889952  (2021-05-09 08:08:40)
                             'size'  5030065