======================== unified (from filesystem) ========================
                                         'bitrate'  '204.785'
                                        'duration'  '227'
                                          'artist'  'Katzenjammer'
                                     'text_people'  ''
                                         'release'  'Le Pop'
                                           'title'  "Hey Ho on the Devil's Back"
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                                      'lastfmtags'  "['folk rock', 'norwegian', 'cabaret', 'female vocalists', 'folk']"
                                     'discogstags'  ("['blues', 'pop', 'folk, world, & country', 'music hall', 'country', "
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '12'
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-pop'
                                             'bpm'  '135'
                                             'key'  '7B'
                                        'acoustid'  '849e1908-5470-40ff-8594-38d51d0389c6'
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'Le Pop'
'TBPM' (BPM (beats per minute))                     '135'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-pop'
'TDOR' (Original release time)                      '2008'
'TDRC' (Recording time)                             '2009-08-25'
'TIT2' (Title/songname/content description)         "Hey Ho on the Devil's Back"
'TKEY' (Initial key)                                '7B'
'TMED' (Media type)                                 'Digital Media'
'TPE1' (Lead performer(s)/Soloist(s))               'Katzenjammer'
'TPE2' (Band/orchestra/accompaniment)               'Katzenjammer'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Nettwerk'
'TRCK' (Track number/Position in set)               '4/12'
'TSO2'                                              'Katzenjammer'
'TSOP' (Performer sort order)                       'Katzenjammer'
'TSRC' (ISRC (international standard recording code))  'NOPRR0801050'
'TXXX:ASIN'                                         'B0048800ZU'
'TXXX:Acoustid Id'                                  '849e1908-5470-40ff-8594-38d51d0389c6'
'TXXX:Artists'                                      'Katzenjammer'
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'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['blues',
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 'folk, world, & country',
 'music hall',
 'country',
 'romani',
 'bluegrass',
 'honky tonk',
 'ballad',
 'folk']
'TXXX:lastfmtags'                                   ['folk rock', 'norwegian', 'cabaret', 'female vocalists', 'folk']
'TXXX:originalyear'                                 '2008'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
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'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.84 dB'
'TXXX:replaygain_track_peak'                        '0.383454'
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========================== row from database ==========================
                                              'id'  1341969
                                            'path'  /data/Music/Bulk/00poprockelectronic/Katzenjammer/Le Pop/04-katzenjammer-hey_ho_on_the_devils_back-prs.mp3
                                         'working'  None
                                         'bitrate'  205
                                    'duration_sec'  227
                                           'genre'  ifs-songwriter-pop
                                        'filesize'  5915927
                                           'mtime'  1642256427
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 04 katzenjammer hey_ho_on_the_devils_back prs ifs songwriter pop
                                      'tag_artist'  Katzenjammer
                                     'tag_release'  Le Pop
                                       'tag_title'  Hey Ho on the Devil's Back
                                             'bpm'  135.0
                                    'search_title'  'back':8 'devil':5 'devils':7 'hey':1 'ho':2 'on':3 's':6 'the':4
                                   'search_artist'  'katzenjammer':1
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                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  7B
                                           'quals'  ['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']
                                      'lastfmtags'  ['folk rock', 'norwegian', 'cabaret', 'female vocalists', 'folk']
                                        'tag_date'  2009
                                     'discogstags'  ['blues', 'pop', 'folk, world, & country', 'music hall', 'country', 'romani', 'bluegrass', 'honky tonk', 'ballad', 'folk']

============================== file details ==============================
                                           'mtime'  1642256426.988715  (2022-01-15 15:20:26)
                             'size'  5915927