======================== unified (from filesystem) ========================
                                         'bitrate'  '80.21'
                                        'duration'  '167'
                                          'artist'  'Connie Converse'
                                     'text_people'  ''
                                         'release'  'Dimitri - Folk, Rock, Pop & Instruments'
                                           'title'  "Johnny's Brother"
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'Q-SYN-2', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-1', "
 "'Q-CHART-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['folk', 'acoustic', 'singer-songwriter', 'female vocalists']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '103.7'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dimitri - Folk, Rock, Pop & Instruments'
'TBPM' (BPM (beats per minute))                     '103.7'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TIT2' (Title/songname/content description)         "Johnny's Brother"
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Connie Converse'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf58.45.100'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['folk', 'acoustic', 'singer-songwriter', 'female vocalists']
'TXXX:q-bass'                                       '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.72 dB'
'TXXX:replaygain_track_peak'                        '0.514221'
'TXXX:youtube'                                      'RvnDBZMeGlQ'

========================== row from database ==========================
                                              'id'  1517972
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Dimitri/FolkRockPopInstrumentals/Connie Converse - Johnny_s Brother-RvnDBZMeGlQ.mp3
                                         'working'  None
                                         'bitrate'  80
                                    'duration_sec'  167
                                           'genre'  ifs-songwriter
                                        'filesize'  1681342
                                           'mtime'  1637329482
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm FolkRockPopInstrumentals Johnny_s RvnDBZMeGlQ ifs songwriter
                                      'tag_artist'  Connie Converse
                                     'tag_release'  Dimitri - Folk, Rock, Pop & Instruments
                                       'tag_title'  Johnny's Brother
                                             'bpm'  103.7
                                    'search_title'  'brother':4 'johnny':1 'johnnys':3 's':2
                                   'search_artist'  'connie':1 'converse':2
                                  'search_release'  'dimitri':1 'folk':2,3 'instruments':7 'pop':6 'rock':4,5
                                     'search_rest'  'dbzme':12 'folk':7 'folkrockpopinstrumentals':1 'gl':13 'ifs':5 'instrumentals':10 'johnny':2 'pop':9 'q':14 'rock':8 'rvn':11 'rvndbzmeglq':4 's':3 'songwriter':6
                                    'search_combo'  'brother':4A 'connie':5B 'converse':6B 'dbzme':25 'dimitri':7C 'folk':8C,9C,20 'folkrockpopinstrumentals':14 'gl':26 'ifs':18 'instrumentals':23 'instruments':13C 'johnny':1A,15 'johnnys':3A 'pop':12C,22 'q':27 'rock':10C,11C,21 'rvn':24 'rvndbzmeglq':17 's':2A,16 'songwriter':19
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-3', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-1', 'Q-SYN-2', 'q-other-3', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1']
                                      'lastfmtags'  ['folk', 'acoustic', 'singer-songwriter', 'female vocalists']
                                        'tag_date'  
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1637329482.194305  (2021-11-19 14:44:42)
                             'size'  1681342