======================== unified (from filesystem) ========================
                                         'bitrate'  '150.889'
                                        'duration'  '179'
                                          'artist'  'Uncle Dave Macon'
                                     'text_people'  ''
                                         'release'  '1926-1927'
                                           'title'  'Arcade Blues'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-OLDST-1', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country', 'all', 'banjo', 'folk']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '18'
                                      'tracktotal'  ''
                                            'date'  '2012'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country-folk-banjo'
                                             'bpm'  '90.2'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'Warped 2674'
'TALB' (Album/Movie/Show title)                     '1926-1927'
'TBPM' (BPM (beats per minute))                     '90.2'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country-folk-banjo'
'TDRC' (Recording time)                             '2012'
'TIT2' (Title/songname/content description)         'Arcade Blues'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Uncle Dave Macon'
'TPUB' (Publisher)                                  'Warped 2674'
'TRCK' (Track number/Position in set)               '18'
'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'                                   ['country', 'all', 'banjo', 'folk']
'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'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.06 dB'
'TXXX:replaygain_track_peak'                        '0.492745'

========================== row from database ==========================
                                              'id'  717292
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Warped 2674 - Uncle Dave Macon (1926-1927)/18 Arcade Blues.mp3
                                         'working'  None
                                         'bitrate'  150
                                    'duration_sec'  179
                                           'genre'  loc-namerica-country-folk-banjo
                                        'filesize'  3659747
                                           'mtime'  1621628909
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Warped 2674 (1926 1927) 18 loc namerica country folk banjo
                                      'tag_artist'  Uncle Dave Macon
                                     'tag_release'  1926-1927
                                       'tag_title'  Arcade Blues
                                             'bpm'  90.2
                                    'search_title'  'arcade':1 'blues':2
                                   'search_artist'  'dave':2 'macon':3 'uncle':1
                                  'search_release'  '1926':1 '19261927':3 '1927':2
                                     'search_rest'  '18':7 '1926':3,4 '1927':5,6 '2674':2 'banjo':12 'country':10 'folk':11 'loc':8 'namerica':9 'warped':1
                                    'search_combo'  '18':15 '1926':6C,11,12 '19261927':8C '1927':7C,13,14 '2674':10 'arcade':1A 'banjo':20 'blues':2A 'country':18 'dave':4B 'folk':19 'loc':16 'macon':5B 'namerica':17 'uncle':3B 'warped':9
                                    'tag_tracknum'  18
                                      'num_images'  1
                                             'key'  10A
                                           '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-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['country', 'all', 'banjo', 'folk']
                                        'tag_date'  2012
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1621628908.8987014  (2021-05-21 22:28:28)
                             'size'  3659747