======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '145'
                                          'artist'  'Man or Astro-Man?'
                                     'text_people'  ''
                                         'release'  'What Remains Inside a Black Hole'
                                           'title'  'The Vortex Beyond'
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                                      'lastfmtags'  "['surf', 'indie', 'majors beloved fm', 'surf rock', 'instrumental', 'rock']"
                                     'discogstags'  "['surf', 'lo-fi', 'indie rock', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  '15'
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'rock-pop-surf'
                                             'bpm'  '111.701'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

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'TBPM' (BPM (beats per minute))                     '111.701'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-surf'
'TDOR' (Original release time)                      '1995'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'The Vortex Beyond'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '0'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Man or Astro-Man?'
'TPE2' (Band/orchestra/accompaniment)               'Man or Astro-Man?'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Au Go Go'
'TRCK' (Track number/Position in set)               '14/15'
'TSO2'                                              'Man or Astro-Man?'
'TSOP' (Performer sort order)                       'Man or Astro-Man?'
'TXXX:ASIN'                                         'B0000015D7'
'TXXX:Artists'                                      'Man or Astro-Man?'
'TXXX:BARCODE'                                      '5021456065905'
'TXXX:CATALOGNUMBER'                                'ANDA 191'
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'TXXX:MusicBrainz Album Release Country'            'AU'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '28c5d97f-4321-4ef4-8ac2-d9d93b0eb16c'
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'TXXX:MusicBrainz Release Track Id'                 '6fcb1f99-8c5a-3948-ba21-6773f1ba5cde'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['surf', 'lo-fi', 'indie rock', 'rock']
'TXXX:lastfmtags'                                   ['surf', 'indie', 'majors beloved fm', 'surf rock', 'instrumental', 'rock']
'TXXX:originalyear'                                 '1995'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.52 dB'
'TXXX:replaygain_track_peak'                        '0.817692'
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========================== row from database ==========================
                                              'id'  1419143
                                            'path'  /data/Music/Bulk/00popandrock-punk-garage-surf-stoner/Man or astro man/(1996) What Remains Inside A Black Hole/14 The Vortex Beyond.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  145
                                           'genre'  rock-pop-surf
                                        'filesize'  5815215
                                           'mtime'  1620737018
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock punk garage surf stoner astro man (1996) 14 rock pop surf
                                      'tag_artist'  Man or Astro-Man?
                                     'tag_release'  What Remains Inside a Black Hole
                                       'tag_title'  The Vortex Beyond
                                             'bpm'  111.701
                                    'search_title'  'beyond':3 'the':1 'vortex':2
                                   'search_artist'  'astro':3 'astroman':5 'man':1,4 'or':2
                                  'search_release'  'a':4 'black':5 'hole':6 'inside':3 'remains':2 'what':1
                                     'search_rest'  '1996':7,8 'astro':5 'garage':2 'man':6 'pop':10 'punk':1 'rock':9 'stoner':4 'surf':3
                                    'search_combo'  '1996':21,22 'a':12C 'astro':6B,19 'astroman':8B 'beyond':3A 'black':13C 'garage':16 'hole':14C 'inside':11C 'man':4B,7B,20 'or':5B 'pop':24 'punk':15 'remains':10C 'rock':23 'stoner':18 'surf':17 'the':1A 'vortex':2A 'what':9C
                                    'tag_tracknum'  14
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['surf', 'indie', 'majors beloved fm', 'surf rock', 'instrumental', 'rock']
                                        'tag_date'  1995
                                     'discogstags'  ['surf', 'lo-fi', 'indie rock', 'rock']

============================== file details ==============================
                                           'mtime'  1620737017.990422  (2021-05-11 14:43:37)
                             'size'  5815215