======================== unified (from filesystem) ========================
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  '21'
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'electronic-experimental-oddness'
                                             'bpm'  '141'
                                             'key'  '10A'
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rest: ''

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

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'TBPM' (BPM (beats per minute))                     '141'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental-oddness'
'TDOR' (Original release time)                      '1999'
'TDRC' (Recording time)                             '1999-06-08'
'TIT2' (Title/songname/content description)         "A Hard Day's Night"
'TKEY' (Initial key)                                '10A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Mrs. Miller'
'TPE2' (Band/orchestra/accompaniment)               'Mrs. Miller'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Capitol Records'
'TRCK' (Track number/Position in set)               '11/21'
'TSO2'                                              'Mrs. Miller'
'TSOP' (Performer sort order)                       'Mrs. Miller'
'TXXX:ASIN'                                         'B00000J600'
'TXXX:Acoustid Id'                                  '3f2a71dd-99b8-4404-ab3d-f76686dd88d9'
'TXXX:Artists'                                      'Mrs. Miller'
'TXXX:BARCODE'                                      '724352033423'
'TXXX:CATALOGNUMBER'                                'CDP 7243 5 20334 2 3'
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'TXXX:MusicBrainz Album Id'                         '117f04b5-8b94-4320-ad4e-0a12411642ff'
'TXXX:MusicBrainz Album Release Country'            'US'
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'TXXX:MusicBrainz Album Type'                       'album/compilation'
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'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '3'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['funny', 'weird', 'comedy', 'outsider', 'american']
'TXXX:originalyear'                                 '1999'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
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'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.01 dB'
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                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Mrs. Miller/Ultra Lounge ~ Wild, Cool & Swingin_ ~ Mrs Miller ~ The Artists Collection [192k]/Mrs. Miller - 11 - A Hard Day_s Night.mp3
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                                    'duration_sec'  145
                                           'genre'  electronic-experimental-oddness
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                                           'mtime'  1636915778
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                                        'rest_str'   00exnnpjpsprgttidm ~ Swingin_ ~ ~ Artists [192k] 11 Day_s electronic experimental oddness
                                      'tag_artist'  Mrs. Miller
                                     'tag_release'  Ultra-Lounge: Wild, Cool & Swingin': The Artist Collection, Volume 3
                                       'tag_title'  A Hard Day's Night
                                             'bpm'  141.0
                                    'search_title'  'a':1 'day':3 'days':5 'hard':2 'night':6 's':4
                                   'search_artist'  'miller':3 'mrs':1,2
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                                    'tag_tracknum'  11
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-2', 'Q-HAP-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['funny', 'weird', 'comedy', 'outsider', 'american']
                                        'tag_date'  1999
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636915778.38859  (2021-11-14 19:49:38)
                             'size'  3593034