======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '368'
                                          'artist'  'Stepheadedredchild'
                                     'text_people'  ''
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                                           'title'  'Calabazita (Jason Mouse Mix)'
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  '10'
                                            'date'  '1999'
                                        'comments'  ''
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                                             'key'  '4A'
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rest: ''

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

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'TBPM' (BPM (beats per minute))                     '88.2'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-breakbeat or dnb or jungle'
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         'Calabazita (Jason Mouse Mix)'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Stepheadedredchild'
'TPE2' (Band/orchestra/accompaniment)               'Stepheadedredchild'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '9/10'
'TSO2'                                              'Stepheadedredchild'
'TSOP' (Performer sort order)                       'Stepheadedredchild'
'TXXX:Acoustid Id'                                  'a2d5be43-74f4-445b-8727-f31446f9c341'
'TXXX:Artists'                                      'Stepheadedredchild'
'TXXX:LABEL'                                        'ZoëMagik Records'
'TXXX:MusicBrainz Album Artist Id'                  '9ef76a16-e4f3-4c59-b83c-feb92be998e8'
'TXXX:MusicBrainz Album Id'                         '514309ae-ce86-4a0c-986c-ec8df3e412f5'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Artist Id'                        '9ef76a16-e4f3-4c59-b83c-feb92be998e8'
'TXXX:MusicBrainz Release Group Id'                 '06765fac-001f-37d1-a613-9f99a3764b19'
'TXXX:MusicBrainz Release Track Id'                 'c5caed59-e352-3510-baf9-196324422ec5'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.46 dB'
'TXXX:replaygain_track_peak'                        '0.453064'
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========================== row from database ==========================
                                              'id'  985822
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Epitonic abstract/W-Calabazita(Jason Mouse mix).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  368
                                           'genre'  electronic-th-breakbeat or dnb or jungle
                                        'filesize'  5904199
                                           'mtime'  1621696357
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Epitonic abstract W Calabazita(Jason mix) electronic th breakbeat or dnb or jungle
                                      'tag_artist'  Stepheadedredchild
                                     'tag_release'  The Remix Sessions
                                       'tag_title'  Calabazita (Jason Mouse Mix)
                                             'bpm'  88.2
                                    'search_title'  'calabazita':1 'jason':2,3 'mix':5,6 'mouse':4
                                   'search_artist'  'stepheadedredchild':1
                                  'search_release'  'remix':2 'sessions':3 'the':1
                                     'search_rest'  'abstract':2 'breakbeat':11 'calabazita':4 'calabazitajason':6 'dnb':13 'electronic':9 'epitonic':1 'jason':5 'jungle':14 'mix':7,8 'or':12 'th':10 'w':3
                                    'search_combo'  'abstract':12 'breakbeat':21 'calabazita':1A,14 'calabazitajason':16 'dnb':23 'electronic':19 'epitonic':11 'jason':2A,3A,15 'jungle':24 'mix':5A,6A,17,18 'mouse':4A 'or':22 'remix':9C 'sessions':10C 'stepheadedredchild':7B 'th':20 'the':8C 'w':13
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-4', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  []
                                        'tag_date'  1999
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696356.847115  (2021-05-22 17:12:36)
                             'size'  5904199