======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '75'
                                          'artist'  'Tommy Guerrero'
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                                         'release'  "No Man's Land"
                                           'title'  'The Loner'
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                                      'lastfmtags'  "['downtempo', 'chillout', 'instrumental', 'fip', 'electronic', 'indie rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '15'
                                            'date'  '2012'
                                        'comments'  ''
                                           'genre'  'electronic-trip hop or downtempo or acid jazz'
                                             'bpm'  '139.2'
                                             'key'  '9A'
                                        'acoustid'  'e3e5a159-ed50-4bae-a120-364319a711a0'
rest: ''

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

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'COMM:iTunNORM:eng'                                 (' 0000083B 00000A12 0000B2D4 0000D349 00004EFA 00004EFA 00007515 00007B48 '
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'COMM:iTunes_CDDB_IDs:eng'                          '15++'
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'TBPM' (BPM (beats per minute))                     '139.2'
'TCON' (Content type, a.k.a. Genre)                 'electronic-trip hop or downtempo or acid jazz'
'TDOR' (Original release time)                      '2012'
'TDRC' (Recording time)                             '2012-09-26'
'TENC' (Encoded by)                                 'iTunes 10.7.0.21'
'TIT2' (Title/songname/content description)         'The Loner'
'TKEY' (Initial key)                                '9A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Tommy Guerrero'
'TPE2' (Band/orchestra/accompaniment)               'Tommy Guerrero'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'AWDR/LR2/Rush! Production'
'TRCK' (Track number/Position in set)               '1/15'
'TSO2'                                              'Guerrero, Tommy'
'TSOP' (Performer sort order)                       'Guerrero, Tommy'
'TXXX:Acoustid Id'                                  'e3e5a159-ed50-4bae-a120-364319a711a0'
'TXXX:Artists'                                      'Tommy Guerrero'
'TXXX:BARCODE'                                      '4543034033072'
'TXXX:CATALOGNUMBER'                                'DDCN-6001'
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'TXXX:MusicBrainz Album Id'                         '85eedc3b-fd7b-4c28-aeec-7c34ea5c612e'
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'TXXX:MusicBrainz Album Status'                     'official'
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'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['downtempo', 'chillout', 'instrumental', 'fip', 'electronic', 'indie rock']
'TXXX:originalyear'                                 '2012'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.15 dB'
'TXXX:replaygain_track_peak'                        '0.405089'
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========================== row from database ==========================
                                              'id'  1485241
                                            'path'  /data/Music/Bulk/00poprockelectronic/tommy guerrero - no mans land (2014)/01 the loner.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  75
                                           'genre'  electronic-trip hop or downtempo or acid jazz
                                        'filesize'  5402049
                                           'mtime'  1636911476
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic tommy guerrero no mans land (2014) 01 the loner electronic trip hop or downtempo or acid jazz
                                      'tag_artist'  Tommy Guerrero
                                     'tag_release'  No Man's Land
                                       'tag_title'  The Loner
                                             'bpm'  139.2
                                    'search_title'  'loner':2 'the':1
                                   'search_artist'  'guerrero':2 'tommy':1
                                  'search_release'  'land':5 'man':2 'mans':4 'no':1 's':3
                                     'search_rest'  '00poprockelectronic':1 '2014':7,8 'acid':16 'downtempo':15 'electronic':11 'guerrero':3 'hop':13 'jazz':17 'land':6 'loner':10 'mans':5 'no':4 'or':14 'the':9 'tommy':2 'trip':12
                                    'search_combo'  '00poprockelectronic':10 '2014':16,17 'acid':25 'downtempo':24 'electronic':20 'guerrero':4B,12 'hop':22 'jazz':26 'land':9C,15 'loner':2A,19 'man':6C 'mans':8C,14 'no':5C,13 'or':23 's':7C 'the':1A,18 'tommy':3B,11 'trip':21
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-3', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-1', 'Q-SYN-2', 'q-other-4', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-4']
                                      'lastfmtags'  ['downtempo', 'chillout', 'instrumental', 'fip', 'electronic', 'indie rock']
                                        'tag_date'  2012
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636911475.8430731  (2021-11-14 18:37:55)
                             'size'  5402049