======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '179'
                                          'artist'  'Charlie Poole'
                                     'text_people'  ''
                                         'release'  '1927-1928 (Warped 2759)'
                                           'title'  'Jealous Mary'
                                           '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-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['folk', 'country', 'fiddle', 'old timey', 'americana']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '18'
                                      'tracktotal'  '20'
                                            'date'  '1927'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country-folk-fiddle'
                                             'bpm'  '87.7'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     '1927-1928 (Warped 2759)'
'TBPM' (BPM (beats per minute))                     '87.7'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country-folk-fiddle'
'TDRC' (Recording time)                             '1927'
'TIT2' (Title/songname/content description)         'Jealous Mary'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Charlie Poole'
'TPE2' (Band/orchestra/accompaniment)               'Charlie Poole'
'TRCK' (Track number/Position in set)               '18/20'
'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:discogstags'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['folk', 'country', 'fiddle', 'old timey', 'americana']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.51 dB'
'TXXX:replaygain_track_peak'                        '0.490307'

========================== row from database ==========================
                                              'id'  646992
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Warped 2759 - Charlie Poole - Classics 1927-1928 (2009)/18 - Jealous Mary.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  179
                                           'genre'  loc-namerica-country-folk-fiddle
                                        'filesize'  7991095
                                           'mtime'  1621628947
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Classics (2009) 18 loc namerica country folk fiddle
                                      'tag_artist'  Charlie Poole
                                     'tag_release'  1927-1928 (Warped 2759)
                                       'tag_title'  Jealous Mary
                                             'bpm'  87.7
                                    'search_title'  'jealous':1 'mary':2
                                   'search_artist'  'charlie':1 'poole':2
                                  'search_release'  '1927':1 '19271928':3 '1928':2 '2759':6,7 'warped':4,5
                                     'search_rest'  '18':4 '2009':2,3 'classics':1 'country':7 'fiddle':9 'folk':8 'loc':5 'namerica':6
                                    'search_combo'  '18':15 '1927':5C '19271928':7C '1928':6C '2009':13,14 '2759':10C,11C 'charlie':3B 'classics':12 'country':18 'fiddle':20 'folk':19 'jealous':1A 'loc':16 'mary':2A 'namerica':17 'poole':4B 'warped':8C,9C
                                    'tag_tracknum'  18
                                      'num_images'  1
                                             'key'  8A
                                           '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-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['folk', 'country', 'fiddle', 'old timey', 'americana']
                                        'tag_date'  1927
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1621628947.0088706  (2021-05-21 22:29:07)
                             'size'  7991095