======================== unified (from filesystem) ========================
                                         'bitrate'  '133.761'
                                        'duration'  '144'
                                          'artist'  'Tex Morton'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'let the rest of the world go. Bye!'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'Q-PLAY-2', 'q-bass-1', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-1', 'q-other-3', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['surf', 'country', 'new zealand', 'australia', '30s']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1945'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '118.636'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '118.636'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '1945'
'TIT2' (Title/songname/content description)         'let the rest of the world go. Bye!'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tex Morton'
'TPE2' (Band/orchestra/accompaniment)               'Tex Morton'
'TPOS' (Part of a set)                              '1/1'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf56.40.101'
'TXXX:DeviceConformanceTemplate'                    'L1'
'TXXX:IsVBR'                                        '1'
'TXXX:Length'                                       '144127'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['surf', 'country', 'new zealand', 'australia', '30s']
'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-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.63 dB'
'TXXX:replaygain_track_peak'                        '0.495886'

========================== row from database ==========================
                                              'id'  967499
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Old Country Music/Tex Morton - Let the rest of the world go by.wma.mp3
                                         'working'  None
                                         'bitrate'  133
                                    'duration_sec'  144
                                           'genre'  loc-namerica-country
                                        'filesize'  2414592
                                           'mtime'  1621628288
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Old Country Music Let by.wma loc namerica country
                                      'tag_artist'  Tex Morton
                                     'tag_release'  None
                                       'tag_title'  let the rest of the world go. Bye!
                                             'bpm'  118.636
                                    'search_title'  'bye':8 'go':6,7 'let':1 'of':4 'rest':3 'the':2 'world':5
                                   'search_artist'  'morton':2 'tex':1
                                  'search_release'  
                                     'search_rest'  'by':8 'bywma':10 'country':4 'exotica':2 'jazz':1 'let':7 'loc':11 'music':6 'namerica':12 'old':5 'oldies':3 'wma':9
                                    'search_combo'  'by':18 'bye':8A 'bywma':20 'country':14 'exotica':12 'go':6A,7A 'jazz':11 'let':1A,17 'loc':21 'morton':10B 'music':16 'namerica':22 'of':4A 'old':15 'oldies':13 'rest':3A 'tex':9B 'the':2A 'wma':19 'world':5A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-mixbeat-1', 'Q-PIANO-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-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['surf', 'country', 'new zealand', 'australia', '30s']
                                        'tag_date'  1945
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1621628288.2021  (2021-05-21 22:18:08)
                             'size'  2414592