======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '152'
                                          'artist'  'Arthur Neal Gunter'
                                     'text_people'  'Arthur Neal Gunter'
                                         'release'  'ABC of the Blues (Disc 12)'
                                           'title'  'Blues After Hours'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-2', 'Q-JZFKS-3', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues', 'rockabilly', 'edhits']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '84.951'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'ABC of the Blues (Disc 12)'
'TBPM' (BPM (beats per minute))                     '84.951'
'TCOM' (Composer)                                   'Arthur Neal Gunter'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'Blues After Hours'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Arthur Neal Gunter'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '12'
'TPUB' (Publisher)                                  'Documents'
'TRCK' (Track number/Position in set)               '13'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['blues', 'rockabilly', 'edhits']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.50 dB'
'TXXX:replaygain_track_peak'                        '0.303981'

========================== row from database ==========================
                                              'id'  679273
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Volume 12 - Buddy Guy - Arthur Gunter - Slim Gaillard/13 - Blues After Hours.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  152
                                           'genre'  prerock-jb-blues
                                        'filesize'  6097883
                                           'mtime'  1620402701
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Volume Buddy Guy Slim Gaillard 13 prerock jb blues
                                      'tag_artist'  Arthur Neal Gunter
                                     'tag_release'  ABC of the Blues (Disc 12)
                                       'tag_title'  Blues After Hours
                                             'bpm'  84.951
                                    'search_title'  'after':2 'blues':1 'hours':3
                                   'search_artist'  'arthur':1 'gunter':3 'neal':2
                                  'search_release'  '12':7,8 'abc':1 'blues':4 'disc':5,6 'of':2 'the':3
                                     'search_rest'  'blues':12 'buddy':6 'country':4 'exotica':2 'gaillard':9 'guy':7 'jazz':1 'jb':11 'oldies':3 'prerock':10 'slim':8 'volume':5
                                    'search_combo'  '12':13C,14C 'abc':7C 'after':2A 'arthur':4B 'blues':1A,10C,26 'buddy':20 'country':18 'disc':11C,12C 'exotica':16 'gaillard':23 'gunter':6B 'guy':21 'hours':3A 'jazz':15 'jb':25 'neal':5B 'of':8C 'oldies':17 'prerock':24 'slim':22 'the':9C 'volume':19
                                    'tag_tracknum'  13
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'rockabilly', 'edhits']
                                        'tag_date'  2010
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620402701.0569108  (2021-05-07 17:51:41)
                             'size'  6097883