======================== unified (from filesystem) ========================
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                                        'duration'  '300'
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                                     'text_people'  ''
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 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
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                                      'lastfmtags'  "['all', 'khmer', 'cambodia', 'cambodian', 'rock', 'psychedelic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
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                                      'tracktotal'  '15'
                                            'date'  '2014'
                                        'comments'  ''
                                           'genre'  'loc-asia-cambodia'
                                             'bpm'  '100'
                                             'key'  '3A'
                                        'acoustid'  '3fc26800-8da7-4878-947c-1d378c1529cc'
rest: ''

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

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'TBPM' (BPM (beats per minute))                     '100'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'loc-asia-cambodia'
'TDOR' (Original release time)                      '2014'
'TDRC' (Recording time)                             '2014-05-26'
'TENC' (Encoded by)                                 'Lame 3.98'
'TIT2' (Title/songname/content description)         'Thgnai Kor Chrer (The Sun Is Setting)'
'TKEY' (Initial key)                                '3A'
'TLAN' (Language(s))                                'Cambodian'
'TMED' (Media type)                                 'Digital Media'
'TPE1' (Lead performer(s)/Soloist(s))               'Sinn Sisamouth'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/2'
'TPUB' (Publisher)                                  'World Music Network'
'TRCK' (Track number/Position in set)               '15/15'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Sisamouth, Sinn'
'TSST' (Set subtitle)                               'The Rough Guide to Psychedelic Cambodia'
'TXXX:ASIN'                                         'B00KAEX0W6'
'TXXX:Acoustid Id'                                  '3fc26800-8da7-4878-947c-1d378c1529cc'
'TXXX:Artists'                                      'Sinn Sisamouth'
'TXXX:CATALOGNUMBER'                                'RGNET1319DD'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         '7080d53f-b039-4d96-829e-73818ba5cbd4'
'TXXX:MusicBrainz Album Release Country'            'XW'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
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'TXXX:MusicBrainz Release Group Id'                 '272199a6-8c4e-4e86-9ad5-f63167a0fdc3'
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'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['all', 'khmer', 'cambodia', 'cambodian', 'rock', 'psychedelic']
'TXXX:originalyear'                                 '2014'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.38 dB'
'TXXX:replaygain_track_peak'                        '0.306136'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'0a5bec57-3f7f-4292-897f-697440e3585d')

========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00localcharacter/00asia/VA-The_Rough_Guide_to_Psychedelic_Cambodia-2CD-2014-NOiR/115-sinn_sisamouth-thgnai_kor_chrer_(the_sun_is_setting)-noir.mp3
                                         'working'  None
                                         'bitrate'  199
                                    'duration_sec'  300
                                           'genre'  loc-asia-cambodia
                                        'filesize'  7484002
                                           'mtime'  1621629191
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00asia VA The_Rough_Guide_to_Psychedelic_Cambodia 2CD 2014 NOiR 115 sinn_sisamouth thgnai_kor_chrer_(the_sun_is_setting) noir loc asia cambodia
                                      'tag_artist'  Sinn Sisamouth
                                     'tag_release'  The Rough Guide to Psychedelic Cambodia
                                       'tag_title'  Thgnai Kor Chrer (The Sun Is Setting)
                                             'bpm'  100.0
                                    'search_title'  'chrer':3 'is':7 'kor':2 'setting':8,9 'sun':6 'the':4,5 'thgnai':1
                                   'search_artist'  'sinn':1 'sisamouth':2
                                  'search_release'  'cambodia':6 'guide':3 'psychedelic':5 'rough':2 'the':1 'to':4
                                     'search_rest'  '00asia':1 '115':12 '2014':10 '2cd':9 'asia':30 'cambodia':8,31 'chrer':17,24 'guide':5 'is':20,27 'kor':16,23 'loc':29 'noi':32 'noir':11 'psychedelic':7 'r':33 'rough':4 'setting':21,28 'sinn':13 'sisamouth':14 'sun':19,26 'the':3,18,25 'thgnai':15,22 'to':6 'va':2
                                    'search_combo'  '00asia':18 '115':29 '2014':27 '2cd':26 'asia':47 'cambodia':17C,25,48 'chrer':3A,34,41 'guide':14C,22 'is':7A,37,44 'kor':2A,33,40 'loc':46 'noi':49 'noir':28 'psychedelic':16C,24 'r':50 'rough':13C,21 'setting':8A,9A,38,45 'sinn':10B,30 'sisamouth':11B,31 'sun':6A,36,43 'the':4A,5A,12C,20,35,42 'thgnai':1A,32,39 'to':15C,23 'va':19
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['all', 'khmer', 'cambodia', 'cambodian', 'rock', 'psychedelic']
                                        'tag_date'  2014
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629191.4904184  (2021-05-21 22:33:11)
                             'size'  7484002