======================== unified (from filesystem) ========================
                                         'bitrate'  '148.009'
                                        'duration'  '177'
                                          'artist'  'Uncle Dave Macon'
                                     'text_people'  ''
                                         'release'  '1927'
                                           'title'  'Carve That Possum'
                                           '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-3', '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'  '03'
                                      'tracktotal'  ''
                                            'date'  '2012'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country-folk-banjo;set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '124.3'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'Warped 2743'
'TALB' (Album/Movie/Show title)                     '1927'
'TBPM' (BPM (beats per minute))                     '124.3'
'TCON' (Content type, a.k.a. Genre)                 ['loc-namerica-country-folk-banjo', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TDRC' (Recording time)                             '2012'
'TIT2' (Title/songname/content description)         'Carve That Possum'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Uncle Dave Macon'
'TPUB' (Publisher)                                  'Warped 2743'
'TRCK' (Track number/Position in set)               '03'
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.38 dB'
'TXXX:replaygain_track_peak'                        '0.414264'

========================== row from database ==========================
                                              'id'  717367
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Warped 2743 - Uncle Dave Macon (1927)/03 Carve That Possum.mp3
                                         'working'  None
                                         'bitrate'  148
                                    'duration_sec'  177
                                           'genre'  loc-namerica-country-folk-banjo;set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  3552183
                                           'mtime'  1621628931
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Warped 2743 (1927) 03 loc namerica country folk banjo;set pl shirleyspinoza;set pl mor
                                      'tag_artist'  Uncle Dave Macon
                                     'tag_release'  1927
                                       'tag_title'  Carve That Possum
                                             'bpm'  124.3
                                    'search_title'  'carve':1 'possum':3 'that':2
                                   'search_artist'  'dave':2 'macon':3 'uncle':1
                                  'search_release'  '1927':1
                                     'search_rest'  '1927':3,4 '2743':2 'banjo':9,11 'country':7 'folk':8 'loc':5 'mor':18 'namerica':6 'pl':13 'set':10,12,15,17 'shirleyspinoza':14,16 'warped':1
                                    'search_combo'  '1927':7C,10,11 '2743':9 'banjo':16,18 'carve':1A 'country':14 'dave':5B 'folk':15 'loc':12 'macon':6B 'mor':25 'namerica':13 'pl':20 'possum':3A 'set':17,19,22,24 'shirleyspinoza':21,23 'that':2A 'uncle':4B 'warped':8
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  5B
                                           '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-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['country', 'all', 'banjo', 'folk']
                                        'tag_date'  2012
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1621628930.601359  (2021-05-21 22:28:50)
                             'size'  3552183