======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '261'
                                          'artist'  'Bob Roberts'
                                     'text_people'  ''
                                         'release'  'Edison Amberol   722'
                                           'title'  "They're All Good American Names"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['1309fh', 'all', '1308fh', 'english folk', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1911'
                                        'comments'  ''
                                           'genre'  'prerock-folk'
                                             'bpm'  '102.540'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Edison Amberol   722'
'TBPM' (BPM (beats per minute))                     '102.540'
'TCON' (Content type, a.k.a. Genre)                 'prerock-folk'
'TDRC' (Recording time)                             '1911'
'TIT2' (Title/songname/content description)         "They're All Good American Names"
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bob Roberts'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['1309fh', 'all', '1308fh', 'english folk', 'folk']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.18 dB'
'TXXX:replaygain_track_peak'                        '0.504856'

========================== row from database ==========================
                                              'id'  1512651
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1911/Bob Roberts - They_re All Good American Names 1911.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  261
                                           'genre'  prerock-folk
                                        'filesize'  5236653
                                           'mtime'  1621705401
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1911 They_re 1911 prerock folk
                                      'tag_artist'  Bob Roberts
                                     'tag_release'  Edison Amberol   722
                                       'tag_title'  They're All Good American Names
                                             'bpm'  102.54
                                    'search_title'  'all':4 'american':6 'good':5 'names':7 're':2 'they':1 'theyre':3
                                   'search_artist'  'bob':1 'roberts':2
                                  'search_release'  '722':3 'amberol':2 'edison':1
                                     'search_rest'  '00oldiepop':5 '1911':6 'country':4 'exotica':2 'folk':10 'jazz':1 'oldies':3 'prerock':9 're':8 'they':7
                                    'search_combo'  '00oldiepop':17 '1911':18 '722':12C 'all':4A 'amberol':11C 'american':6A 'bob':8B 'country':16 'edison':10C 'exotica':14 'folk':22 'good':5A 'jazz':13 'names':7A 'oldies':15 'prerock':21 're':2A,20 'roberts':9B 'they':1A,19 'theyre':3A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['1309fh', 'all', '1308fh', 'english folk', 'folk']
                                        'tag_date'  1911
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621705400.7503169  (2021-05-22 19:43:20)
                             'size'  5236653