======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '234'
                                          'artist'  'Rotfront'
                                     'text_people'  ''
                                         'release'  '?'
                                           'title'  'Devil @ Budapest 08 12 2012 (Sziget)'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-2', "
 "'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['russendisko', 'balkan', 'ska', 'russian', 'folk', 'klezmer']"
                                     'discogstags'  "['reggae', 'hip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-unsorted'
                                             'bpm'  '128.170'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '?'
'TBPM' (BPM (beats per minute))                     '128.170'
'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted'
'TIT2' (Title/songname/content description)         'Devil @ Budapest 08 12 2012 (Sziget)'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Rotfront'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf54.20.4'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:compatible_brands'                            'iso6mp41'
'TXXX:discogstags'                                  ['reggae', 'hip hop']
'TXXX:lastfmtags'                                   ['russendisko', 'balkan', 'ska', 'russian', 'folk', 'klezmer']
'TXXX:major_brand'                                  'dash'
'TXXX:minor_version'                                '0'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.62 dB'
'TXXX:replaygain_track_peak'                        '0.476210'

========================== row from database ==========================
                                              'id'  979755
                                            'path'  /data/Music/Bulk/00localcharacter/Rotfront - Emigrantski Raggamuffin/Rotfront - Devil @ Budapest 08_12_2012 (Sziget).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  234
                                           'genre'  loc-unsorted
                                        'filesize'  3747974
                                           'mtime'  1637438261
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter Emigrantski Raggamuffin 08_12_2012 loc unsorted
                                      'tag_artist'  Rotfront
                                     'tag_release'  ?
                                       'tag_title'  Devil @ Budapest 08 12 2012 (Sziget)
                                             'bpm'  128.17
                                    'search_title'  '2012':3 'budapest':2 'devil':1 'sziget':4,5
                                   'search_artist'  'rotfront':1
                                  'search_release'  
                                     'search_rest'  '08':3 '12':4 '2012':5 'emigrantski':1 'loc':6 'raggamuffin':2 'unsorted':7
                                    'search_combo'  '08':9 '12':10 '2012':3A,11 'budapest':2A 'devil':1A 'emigrantski':7 'loc':12 'raggamuffin':8 'rotfront':6B 'sziget':4A,5A 'unsorted':13
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['russendisko', 'balkan', 'ska', 'russian', 'folk', 'klezmer']
                                        'tag_date'  
                                     'discogstags'  ['reggae', 'hip hop']

============================== file details ==============================
                                           'mtime'  1637438261.0874214  (2021-11-20 20:57:41)
                             'size'  3747974