======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '128'
                                          'artist'  'Union 13'
                                     'text_people'  'José Mercado/Union 13'
                                         'release'  'Punk-O-Rama 4 (Straight Outta The Pit) '
                                           'title'  "A Life's Story"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['street punk', 'punk rock', 'hardcore punk', 'punk', 'hardcore']"
                                     'discogstags'  "['punk', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'rock-gr-punk'
                                             'bpm'  '134.3'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
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'PRIV:WM/WMCollectionID:IJ=Îwæc@¯ÝLø\x01ë\x93Ñ'     PRIV(owner='WM/WMCollectionID', data=b'\xc4\xb2=\xcew\xe6c@\xaf\xddL\xf8\x01\xeb\x93\xd1')
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'TALB' (Album/Movie/Show title)                     'Punk-O-Rama 4 (Straight Outta The Pit) '
'TBPM' (BPM (beats per minute))                     '134.3'
'TCMP'                                              '1'
'TCOM' (Composer)                                   'José Mercado/Union 13'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-punk'
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         "A Life's Story"
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Union 13'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Epitaph'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['punk', 'rock']
'TXXX:lastfmtags'                                   ['street punk', 'punk rock', 'hardcore punk', 'punk', 'hardcore']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.13 dB'
'TXXX:replaygain_track_peak'                        '0.457082'

========================== row from database ==========================
                                              'id'  1498918
                                            'path'  /data/Music/Bulk/00popandrock-punk-garage-surf-stoner/Pennywise - Epitaph/Punk-o-Rama Vol. 4/04 - Union 13 - A Life_s Story.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  128
                                           'genre'  rock-gr-punk
                                        'filesize'  2562819
                                           'mtime'  1622659075
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock punk garage surf stoner Pennywise Epitaph Vol. 04 Life_s rock gr punk
                                      'tag_artist'  Union 13
                                     'tag_release'  Punk-O-Rama 4 (Straight Outta The Pit) 
                                       'tag_title'  A Life's Story
                                             'bpm'  134.3
                                    'search_title'  'a':1 'life':2 'lifes':4 's':3 'story':5
                                   'search_artist'  'union':1
                                  'search_release'  '4':5 'o':2 'outta':8 'pit':10,11 'punk':1 'punkorama':4 'rama':3 'straight':6,7 'the':9
                                     'search_rest'  'epitaph':6 'garage':2 'gr':12 'life':9 'pennywise':5 'punk':1 'rock':11 's':10 'stoner':4 'surf':3 'vol':7,8
                                    'search_combo'  '4':11C 'a':1A 'epitaph':23 'garage':19 'gr':29 'life':2A,26 'lifes':4A 'o':8C 'outta':14C 'pennywise':22 'pit':16C,17C 'punk':7C,18 'punkorama':10C 'rama':9C 'rock':28 's':3A,27 'stoner':21 'story':5A 'straight':12C,13C 'surf':20 'the':15C 'union':6B 'vol':24,25
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-3']
                                      'lastfmtags'  ['street punk', 'punk rock', 'hardcore punk', 'punk', 'hardcore']
                                        'tag_date'  1999
                                     'discogstags'  ['punk', 'rock']

============================== file details ==============================
                                           'mtime'  1622659075.0320983  (2021-06-02 20:37:55)
                             'size'  2562819