======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '223'
                                          'artist'  "Th' Legendary Shack*Shakers"
                                     'text_people'  ''
                                         'release'  "Cockadoodledon't"
                                           'title'  'Blood on the Bluegrass'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-HHRNBTT-1', "
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                                      'lastfmtags'  "['psychobilly', 'rockabilly', 'country', 'punk', 'blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  '12'
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'rock-rockabilly or psychobilly'
                                             'bpm'  '127.204'
                                             'key'  '9A'
                                        'acoustid'  '2bf4ae5d-0511-4e47-be91-4db6ccd603bb'
rest: ''

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

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'TBPM' (BPM (beats per minute))                     '127.204'
'TCON' (Content type, a.k.a. Genre)                 'rock-rockabilly or psychobilly'
'TDOR' (Original release time)                      '2003'
'TDRC' (Recording time)                             '2003-07-14'
'TIT2' (Title/songname/content description)         'Blood on the Bluegrass'
'TKEY' (Initial key)                                '9A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               "Th' Legendary Shack*Shakers"
'TPE2' (Band/orchestra/accompaniment)               "Th' Legendary Shack*Shakers"
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Bloodshot Records'
'TRCK' (Track number/Position in set)               '8/12'
'TSO2'                                              'Legendary Shack Shakers, The'
'TSOP' (Performer sort order)                       'Legendary Shack Shakers, The'
'TXXX:ASIN'                                         'B00008OM00'
'TXXX:Acoustid Id'                                  '2bf4ae5d-0511-4e47-be91-4db6ccd603bb'
'TXXX:Artists'                                      "Th' Legendary Shack*Shakers"
'TXXX:BARCODE'                                      '744302009629'
'TXXX:CATALOGNUMBER'                                'BS 096'
'TXXX:MusicBrainz Album Artist Id'                  '7802f51b-2fbe-4287-ad93-4c3d596b50b6'
'TXXX:MusicBrainz Album Id'                         '8f90d974-9f9a-425d-a27b-215bb65825bb'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '7802f51b-2fbe-4287-ad93-4c3d596b50b6'
'TXXX:MusicBrainz Release Group Id'                 '52ea6a90-5526-3fd4-a6e4-35e14317a02a'
'TXXX:MusicBrainz Release Track Id'                 'c59ef342-da8d-35e9-b9c5-d7ca40821f1f'
'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:lastfmtags'                                   ['psychobilly', 'rockabilly', 'country', 'punk', 'blues']
'TXXX:originalyear'                                 '2003'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.84 dB'
'TXXX:replaygain_track_peak'                        '0.411051'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'134e629c-042e-492b-93e2-8a6c007a4631')

========================== row from database ==========================
                                              'id'  1532132
                                            'path'  /data/Music/Bulk/00poprockelectronic/musica/Legendary Shack Shakers, Th_/cockadoodledon't/08 - blood on the bluegrass.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  223
                                           'genre'  rock-rockabilly or psychobilly
                                        'filesize'  4617491
                                           'mtime'  1620526485
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic musica Shakers, Th_ cockadoodledon't 08 blood bluegrass rock rockabilly or psychobilly
                                      'tag_artist'  Th' Legendary Shack*Shakers
                                     'tag_release'  Cockadoodledon't
                                       'tag_title'  Blood on the Bluegrass
                                             'bpm'  127.204
                                    'search_title'  'blood':1 'bluegrass':4 'on':2 'the':3
                                   'search_artist'  'legendary':3 'shack':4 'shackshakers':6 'shakers':5 'th':1,2
                                  'search_release'  'cockadoodledon':1 'cockadoodledont':3 't':2
                                     'search_rest'  '00poprockelectronic':1 'blood':9 'bluegrass':10 'cockadoodledon':6 'cockadoodledont':8 'musica':2 'or':13 'psychobilly':14 'rock':11 'rockabilly':12 'shakers':3,4 't':7 'th':5
                                    'search_combo'  '00poprockelectronic':14 'blood':1A,22 'bluegrass':4A,23 'cockadoodledon':11C,19 'cockadoodledont':13C,21 'legendary':7B 'musica':15 'on':2A 'or':26 'psychobilly':27 'rock':24 'rockabilly':25 'shack':8B 'shackshakers':10B 'shakers':9B,16,17 't':12C,20 'th':5B,6B,18 'the':3A
                                    'tag_tracknum'  8
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', '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-2']
                                      'lastfmtags'  ['psychobilly', 'rockabilly', 'country', 'punk', 'blues']
                                        'tag_date'  2003
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620526485.4760208  (2021-05-09 04:14:45)
                             'size'  4617491