======================== unified (from filesystem) ========================
                                         'bitrate'  '192.468'
                                        'duration'  '141'
                                          'artist'  'Wilf Carter'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'My Little Old Log Shack I Can Call My Home'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-1', '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'  '124.929'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '124.929'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '1945'
'TIT2' (Title/songname/content description)         'My Little Old Log Shack I Can Call My Home'
'TKEY' (Initial key)                                '11A'
'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'                                       '140990'
'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'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.06 dB'
'TXXX:replaygain_track_peak'                        '0.710872'

========================== row from database ==========================
                                              'id'  967891
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Old Country Music/Wilf Carter (Montana Slim) - My Little Old Log Shack I Can Call My Home.wma.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  141
                                           'genre'  loc-namerica-country
                                        'filesize'  3397632
                                           'mtime'  1621628326
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Country Music (Montana Slim) Home.wma loc namerica country
                                      'tag_artist'  Wilf Carter
                                     'tag_release'  None
                                       'tag_title'  My Little Old Log Shack I Can Call My Home
                                             'bpm'  124.929
                                    'search_title'  'call':8 'can':7 'home':9 'i':6 'little':2 'log':4 'my':1 'old':3 'shack':5
                                   'search_artist'  'carter':2 'wilf':1
                                  'search_release'  
                                     'search_rest'  'country':4 'exotica':2 'home':10 'homewma':12 'jazz':1 'loc':13 'montana':6,7 'music':5 'namerica':14 'oldies':3 'slim':8,9 'wma':11
                                    'search_combo'  'call':8A 'can':7A 'carter':11B 'country':15 'exotica':13 'home':9A,21 'homewma':23 'i':6A 'jazz':12 'little':2A 'loc':24 'log':4A 'montana':17,18 'music':16 'my':1A 'namerica':25 'old':3A 'oldies':14 'shack':5A 'slim':19,20 'wilf':10B 'wma':22
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  11A
                                           '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-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['country', 'cowboy', 'folk', 'yodel', 'canadian']
                                        'tag_date'  1945
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621628325.6932292  (2021-05-21 22:18:45)
                             'size'  3397632