======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '357'
                                          'artist'  'Tuvan Throat Singers'
                                     'text_people'  ''
                                         'release'  'Deep In The Heart Of Tuva'
                                           'title'  'Oleg Kuupar, Mikhail Alperin,'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', 'Q-UNU-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['throat singing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '17'
                                      'tracktotal'  ''
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'loc-russia-tuva'
                                             'bpm'  '135.274'
                                             'key'  '2B'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'Deep In The Heart Of Tuva'
'TBPM' (BPM (beats per minute))                     '135.274'
'TCON' (Content type, a.k.a. Genre)                 'loc-russia-tuva'
'TDRC' (Recording time)                             '1996'
'TIT2' (Title/songname/content description)         'Oleg Kuupar, Mikhail Alperin,'
'TKEY' (Initial key)                                '2B'
'TPE1' (Lead performer(s)/Soloist(s))               'Tuvan Throat Singers'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Ellipsis Arts'
'TRCK' (Track number/Position in set)               '17'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '3'
'TXXX:lastfmtags'                                   'throat singing'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.73 dB'
'TXXX:replaygain_track_peak'                        '0.768088'

========================== row from database ==========================
                                              'id'  979996
                                            'path'  /data/Music/Bulk/00localcharacter/Tuvan Throat Singers - Deep In The Heart Of Tuva/16 - in the cathedral - oleg kuular, aljans, et. al..mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  357
                                           'genre'  loc-russia-tuva
                                        'filesize'  8581567
                                           'mtime'  1621629841
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 16 the cathedral oleg kuular, aljans, et. al. loc russia tuva
                                      'tag_artist'  Tuvan Throat Singers
                                     'tag_release'  Deep In The Heart Of Tuva
                                       'tag_title'  Oleg Kuupar, Mikhail Alperin,
                                             'bpm'  135.274
                                    'search_title'  'alperin':5,6 'kuupar':2,3 'mikhail':4 'oleg':1
                                   'search_artist'  'singers':3 'throat':2 'tuvan':1
                                  'search_release'  'deep':1 'heart':4 'in':2 'of':5 'the':3 'tuva':6
                                     'search_rest'  'al':10,11 'aljans':6,7 'cathedral':2 'et':8,9 'kuular':4,5 'loc':12 'oleg':3 'russia':13 'the':1 'tuva':14
                                    'search_combo'  'al':25,26 'aljans':21,22 'alperin':5A,6A 'cathedral':17 'deep':10C 'et':23,24 'heart':13C 'in':11C 'kuular':19,20 'kuupar':2A,3A 'loc':27 'mikhail':4A 'of':14C 'oleg':1A,18 'russia':28 'singers':9B 'the':12C,16 'throat':8B 'tuva':15C,29 'tuvan':7B
                                    'tag_tracknum'  17
                                      'num_images'  0
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['throat singing']
                                        'tag_date'  1996
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629840.5538466  (2021-05-21 22:44:00)
                             'size'  8581567