======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '147'
                                          'artist'  'Johnny Cash'
                                     'text_people'  ''
                                         'release'  'Gospel Glory'
                                           'title'  'Amazing Grace'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country', 'singer songwritergdchill', 'cover', 'singer songwriter']"
                                     'discogstags'  "['gospel', 'folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '84.596'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Gospel Glory'
'TBPM' (BPM (beats per minute))                     '84.596'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Amazing Grace'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Johnny Cash'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['gospel', 'folk, world, & country']
'TXXX:lastfmtags'                                   ['country', 'singer songwritergdchill', 'cover', 'singer songwriter']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.32 dB'
'TXXX:replaygain_track_peak'                        '0.596412'

========================== row from database ==========================
                                              'id'  246696
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Johnny Cash/Gospel Glory__MBZ;#Johnny Cash;#Gospel Glory;#04;#Amazing Grace.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  147
                                           'genre'  ifs-songwriter
                                        'filesize'  2362862
                                           'mtime'  1636400314
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos Glory__MBZ;#Johnny Cash;#Gospel Glory;#04;#Amazing ifs songwriter
                                      'tag_artist'  Johnny Cash
                                     'tag_release'  Gospel Glory
                                       'tag_title'  Amazing Grace
                                             'bpm'  84.596
                                    'search_title'  'amazing':1 'grace':2
                                   'search_artist'  'cash':2 'johnny':1
                                  'search_release'  'glory':2 'gospel':1
                                     'search_rest'  '00singer':1 '04':15,18 'amazing':16,19 'cash':10,12 'eos':3 'glory':4,7,14,17 'gospel':11,13 'ifs':20 'johnny':6,9 'mbz':5,8 'songwriter':2
                                    'search_combo'  '00singer':7 '04':21,24 'amazing':1A,22,25 'cash':4B,16,18 'eos':9 'glory':6C,10,13,20,23 'gospel':5C,17,19 'grace':2A 'ifs':26 'johnny':3B,12,15 'mbz':11,14 'songwriter':8
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['country', 'singer songwritergdchill', 'cover', 'singer songwriter']
                                        'tag_date'  2000
                                     'discogstags'  ['gospel', 'folk, world, & country']

============================== file details ==============================
                                           'mtime'  1636400314.3312554  (2021-11-08 20:38:34)
                             'size'  2362862