======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '153'
                                          'artist'  'Willie Nelson'
                                     'text_people'  ''
                                         'release'  'Justin Tubb - (Warped SW03)'
                                           'title'  'Feed It a Memory'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-4', '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', 'outlaw country', 'americana', 'folk', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '25'
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '109.7'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Justin Tubb - (Warped SW03)'
'TBPM' (BPM (beats per minute))                     '109.7'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'Feed It a Memory'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Willie Nelson'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '25'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['country', 'outlaw country', 'americana', 'folk', 'singer songwriter']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.39 dB'
'TXXX:replaygain_track_peak'                        '0.418728'

========================== row from database ==========================
                                              'id'  647426
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Warped Records Collection/Warped SW03 - Justin Tubb - The Songwriter Series 2010/25. Feed It a Memory.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  153
                                           'genre'  loc-namerica-country
                                        'filesize'  6947835
                                           'mtime'  1621629002
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Records Collection The Songwriter Series 2010 25. loc namerica country
                                      'tag_artist'  Willie Nelson
                                     'tag_release'  Justin Tubb - (Warped SW03)
                                       'tag_title'  Feed It a Memory
                                             'bpm'  109.7
                                    'search_title'  'a':3 'feed':1 'it':2 'memory':4
                                   'search_artist'  'nelson':2 'willie':1
                                  'search_release'  'justin':1 'sw03':5,6 'tubb':2 'warped':3,4
                                     'search_rest'  '2010':6 '25':7,8 'collection':2 'country':11 'loc':9 'namerica':10 'records':1 'series':5 'songwriter':4 'the':3
                                    'search_combo'  '2010':18 '25':19,20 'a':3A 'collection':14 'country':23 'feed':1A 'it':2A 'justin':7C 'loc':21 'memory':4A 'namerica':22 'nelson':6B 'records':13 'series':17 'songwriter':16 'sw03':11C,12C 'the':15 'tubb':8C 'warped':9C,10C 'willie':5B
                                    'tag_tracknum'  25
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', '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-4', 'q-grit-2']
                                      'lastfmtags'  ['country', 'outlaw country', 'americana', 'folk', 'singer songwriter']
                                        'tag_date'  2010
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629001.9511359  (2021-05-21 22:30:01)
                             'size'  6947835