======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '156'
                                          'artist'  'The Allen Brothers'
                                     'text_people'  ''
                                         'release'  'Doom & Gloom - Early Songs of Angst & Disaster, 1927-1945'
                                           'title'  'Jake Walk Blues'
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                                      'lastfmtags'  "['country', 'gospel', 'leaving', 'male vocals', 'all']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '19'
                                      'tracktotal'  '24'
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '95.1'
                                             'key'  '2B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Doom & Gloom - Early Songs of Angst & Disaster, 1927-1945'
'TBPM' (BPM (beats per minute))                     '95.1'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '2008-01-22'
'TENC' (Encoded by)                                 'Lame 3.97'
'TIT2' (Title/songname/content description)         'Jake Walk Blues'
'TKEY' (Initial key)                                '2B'
'TLAN' (Language(s))                                'English'
'TPE1' (Lead performer(s)/Soloist(s))               'The Allen Brothers'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Trikont'
'TRCK' (Track number/Position in set)               '19/24'
'TSOP' (Performer sort order)                       'Allen Brothers, The'
'TXXX:ALBUMARTISTSORT'                              'Various Artists'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         '30999223-1fe4-46be-b032-9394c4644d7f'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        '6af8560a-4c9c-4c4f-b107-7dec3e811e17'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['country', 'gospel', 'leaving', 'male vocals', 'all']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.11 dB'
'TXXX:replaygain_track_peak'                        '0.427865'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'8e051c35-6263-42be-82ca-19b080f20fe1')

========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/doom & gloom - early songs of angst & disaster, 1927-1945/19 - The Allen Brothers - Jake Walk Blues.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  156
                                           'genre'  loc-namerica-country
                                        'filesize'  2500644
                                           'mtime'  1621626213
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm doom gloom early songs angst disaster, loc namerica country
                                      'tag_artist'  The Allen Brothers
                                     'tag_release'  Doom & Gloom - Early Songs of Angst & Disaster, 1927-1945
                                       'tag_title'  Jake Walk Blues
                                             'bpm'  95.1
                                    'search_title'  'blues':3 'jake':1 'walk':2
                                   'search_artist'  'allen':2 'brothers':3 'the':1
                                  'search_release'  '1927':9 '19271945':11 '1945':10 'angst':6 'disaster':7,8 'doom':1 'early':3 'gloom':2 'of':5 'songs':4
                                     'search_rest'  'angst':5 'country':10 'disaster':6,7 'doom':1 'early':3 'gloom':2 'loc':8 'namerica':9 'songs':4
                                    'search_combo'  '1927':15C '19271945':17C '1945':16C 'allen':5B 'angst':12C,22 'blues':3A 'brothers':6B 'country':27 'disaster':13C,14C,23,24 'doom':7C,18 'early':9C,20 'gloom':8C,19 'jake':1A 'loc':25 'namerica':26 'of':11C 'songs':10C,21 'the':4B 'walk':2A
                                    'tag_tracknum'  19
                                      'num_images'  0
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['country', 'gospel', 'leaving', 'male vocals', 'all']
                                        'tag_date'  2008
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621626212.7570393  (2021-05-21 21:43:32)
                             'size'  2500644