======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '165'
                                          'artist'  'Seldom Scene'
                                     'text_people'  ''
                                         'release'  '1972-1973 (Warped 7210)'
                                           'title'  'Cannonball'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-OLDST-1', '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-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['bluegrass', 'country', 'folk-country', 'all']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '119.3'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     '1972-1973 (Warped 7210)'
'TBPM' (BPM (beats per minute))                     '119.3'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'Cannonball'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Seldom Scene'
'TPE2' (Band/orchestra/accompaniment)               'Seldom Scene'
'TRCK' (Track number/Position in set)               '04'
'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'                                   ['bluegrass', 'country', 'folk-country', 'all']
'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'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.03 dB'
'TXXX:replaygain_track_peak'                        '0.472853'

========================== row from database ==========================
                                              'id'  647530
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Warped Records Collection/Warped 7210 - Seldom Scene - Classics 1972-1973 (2010)/04 - Cannonball.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  165
                                           'genre'  loc-namerica-country
                                        'filesize'  7456360
                                           'mtime'  1621489379
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Records Collection Classics (2010) 04 loc namerica country
                                      'tag_artist'  Seldom Scene
                                     'tag_release'  1972-1973 (Warped 7210)
                                       'tag_title'  Cannonball
                                             'bpm'  119.3
                                    'search_title'  'cannonball':1
                                   'search_artist'  'scene':2 'seldom':1
                                  'search_release'  '1972':1 '19721973':3 '1973':2 '7210':6,7 'warped':4,5
                                     'search_rest'  '2010':4,5 'classics':3 'collection':2 'country':8 'loc':6 'namerica':7 'records':1
                                    'search_combo'  '1972':4C '19721973':6C '1973':5C '2010':14,15 '7210':9C,10C 'cannonball':1A 'classics':13 'collection':12 'country':18 'loc':16 'namerica':17 'records':11 'scene':3B 'seldom':2B 'warped':7C,8C
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['bluegrass', 'country', 'folk-country', 'all']
                                        'tag_date'  2010
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621489378.9785912  (2021-05-20 07:42:58)
                             'size'  7456360