======================== unified (from filesystem) ========================
                                         'bitrate'  '139.581'
                                        'duration'  '165'
                                          'artist'  'Wilf Carter'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "I Ain't Gonna Be A Hobo No mo"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country', 'cowboy', 'folk', 'yodel', 'canadian']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1945'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '137.758'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '137.758'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '1945'
'TIT2' (Title/songname/content description)         "I Ain't Gonna Be A Hobo No mo"
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Wilf Carter'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf56.40.101'
'TXXX:DeviceConformanceTemplate'                    'L1'
'TXXX:IsVBR'                                        '1'
'TXXX:Length'                                       '165802'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['country', 'cowboy', 'folk', 'yodel', 'canadian']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.00 dB'
'TXXX:replaygain_track_peak'                        '0.392030'

========================== row from database ==========================
                                              'id'  967415
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Old Country Music/Wilf Carter (Montana Slim) - I ain t gonna be a hobo no more.wma.mp3
                                         'working'  None
                                         'bitrate'  139
                                    'duration_sec'  165
                                           'genre'  loc-namerica-country
                                        'filesize'  2899614
                                           'mtime'  1621628320
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Old Country Music (Montana Slim) ain gonna be hobo no more.wma loc namerica country
                                      'tag_artist'  Wilf Carter
                                     'tag_release'  None
                                       'tag_title'  I Ain't Gonna Be A Hobo No mo
                                             'bpm'  137.758
                                    'search_title'  'a':7 'ain':2 'aint':4 'be':6 'gonna':5 'hobo':8 'i':1 'mo':10 'no':9 't':3
                                   'search_artist'  'carter':2 'wilf':1
                                  'search_release'  
                                     'search_rest'  'ain':11 'be':13 'country':4 'exotica':2 'gonna':12 'hobo':14 'jazz':1 'loc':19 'montana':7,8 'more':16 'morewma':18 'music':6 'namerica':20 'no':15 'old':5 'oldies':3 'slim':9,10 'wma':17
                                    'search_combo'  'a':7A 'ain':2A,23 'aint':4A 'be':6A,25 'carter':12B 'country':16 'exotica':14 'gonna':5A,24 'hobo':8A,26 'i':1A 'jazz':13 'loc':31 'mo':10A 'montana':19,20 'more':28 'morewma':30 'music':18 'namerica':32 'no':9A,27 'old':17 'oldies':15 'slim':21,22 't':3A 'wilf':11B 'wma':29
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['country', 'cowboy', 'folk', 'yodel', 'canadian']
                                        'tag_date'  1945
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621628320.2327332  (2021-05-21 22:18:40)
                             'size'  2899614